:root {
  --ink: #0e1b26;
  --ink-2: #162936;
  --ink-3: #1f3646;
  --paper: #f7f4ee;
  --paper-2: #efeae0;
  --paper-3: #e6dfd2;
  --brass: #c8a45c;
  --brass-2: #a9853f;
  --teal: #12726b;
  --teal-2: #0d5a55;
  --coral: #d96c4f;
  --green: #3f7d5c;
  --muted: #5e6b73;
  --line: rgba(14, 27, 38, 0.14);
  --line-strong: rgba(14, 27, 38, 0.28);
  --line-light: rgba(247, 244, 238, 0.16);
  --serif: "Bodoni MT", "Didot", "Songti SC", "STSong", "Noto Serif SC", "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  --mono: "SFMono-Regular", "Cascadia Mono", "Consolas", "Liberation Mono", monospace;
  --max: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--brass); color: var(--ink); }
a { color: inherit; text-decoration: none; }
section[id] { scroll-margin-top: 84px; }
img, svg { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }
h1, h2, h3, p, dl, dd, figure { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.skip {
  position: fixed; left: 16px; top: -60px; z-index: 100;
  background: var(--brass); color: var(--ink); padding: 10px 18px;
  font-size: 13px; border-radius: 2px; transition: top 0.2s;
}
.skip:focus { top: 16px; }

.grain {
  position: fixed; inset: 0; z-index: 40; pointer-events: none; opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------------- nav ---------------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: flex; align-items: center; gap: 32px;
  height: 76px; padding: 0 clamp(20px, 4vw, 56px);
  color: var(--paper);
  transition: background 0.35s var(--ease), border-color 0.35s, height 0.35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  height: 64px;
  background: rgba(14, 27, 38, 0.94);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line-light);
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-ring { width: 34px; height: 34px; color: var(--brass); flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text b { font-family: var(--serif); font-size: 20px; font-weight: 600; letter-spacing: 0.14em; }
.brand-text i { font-style: normal; font-family: var(--mono); font-size: 8px; letter-spacing: 0.42em; color: var(--brass); margin-top: 4px; }
.nav-links { display: flex; gap: 30px; margin-left: auto; font-size: 13px; letter-spacing: 0.08em; }
.nav-links a { position: relative; opacity: 0.78; padding: 6px 0; transition: opacity 0.2s; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--brass); transition: right 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { opacity: 1; }
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }
.nav-actions { display: flex; align-items: center; gap: 18px; margin-left: 10px; }
.ghost { font-size: 12.5px; opacity: 0.7; letter-spacing: 0.08em; }
.ghost:hover { opacity: 1; color: var(--brass); }

.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 26px; font-size: 13.5px; letter-spacing: 0.06em;
  border: 1px solid transparent; border-radius: 2px;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn-brass { background: var(--brass); color: var(--ink); }
.btn-brass:hover { background: #d8b972; }
.btn-line { border-color: var(--line-strong); color: inherit; }
.btn-line:hover { border-color: var(--brass); color: var(--brass); }
.nav .btn { padding: 10px 18px; font-size: 12.5px; }

/* ---------------- hero ---------------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--ink); color: var(--paper);
  padding: 170px clamp(20px, 4vw, 56px) 90px;
  min-height: 100svh;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(30px, 4vw, 72px); align-items: center;
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0; height: 140px;
  background: linear-gradient(to bottom, transparent, rgba(14, 27, 38, 0.55));
  pointer-events: none;
}
.hero-ring {
  position: absolute; right: -160px; top: 50%; transform: translateY(-50%);
  width: min(760px, 62vw); opacity: 0.9; pointer-events: none;
}
.hero-ring svg { width: 100%; height: auto; }
.tick-ring.slow { animation: spin 160s linear infinite; transform-origin: 300px 300px; }
.hero-ring > svg > .tick-ring:first-of-type { animation: spin 120s linear infinite reverse; transform-origin: 300px 300px; }
@keyframes spin { to { transform: rotate(360deg); } }

.hero-inner { position: relative; z-index: 2; max-width: 660px; }
.eyebrow {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.34em;
  color: var(--brass); text-transform: uppercase; margin-bottom: 26px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(44px, 5.6vw, 82px); line-height: 1.06; letter-spacing: -0.015em;
}
.hl { position: relative; white-space: nowrap; color: var(--brass); }
.hl::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.06em; height: 0.34em;
  background: rgba(200, 164, 92, 0.14); z-index: -1;
}
.lead {
  margin-top: 30px; max-width: 46ch; color: rgba(247, 244, 238, 0.68);
  font-size: 15.5px; line-height: 1.95;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.hero .btn-line { border-color: rgba(247, 244, 238, 0.3); }
.hero .btn-line:hover { border-color: var(--brass); }
.hero-facts {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px; margin-top: 64px; padding-top: 22px; border-top: 1px solid var(--line-light);
}
.hero-facts dt {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.24em;
  color: rgba(247, 244, 238, 0.45); text-transform: uppercase;
}
.hero-facts dd { font-size: 12.5px; color: rgba(247, 244, 238, 0.86); margin-top: 6px; letter-spacing: 0.03em; }

/* instrument */
.instrument {
  position: relative; z-index: 3; justify-self: end; width: min(400px, 100%);
  background: rgba(247, 244, 238, 0.97); color: var(--ink);
  border: 1px solid rgba(247, 244, 238, 0.5); border-radius: 2px;
  padding: 24px 24px 0; box-shadow: 0 40px 90px rgba(0, 0, 0, 0.35);
  transform: rotate(-1.2deg);
}
.ins-head { display: flex; align-items: center; gap: 10px; font-size: 11px; color: var(--muted); letter-spacing: 0.06em; }
.ins-head .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(63, 125, 92, 0.12); }
.ins-tag { margin-left: auto; font-family: var(--mono); font-size: 9.5px; border: 1px solid var(--line); padding: 2px 7px; color: var(--muted); }
.ins-amount { margin-top: 20px; }
.ins-label { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.2em; color: var(--muted); }
.ins-amount b {
  display: block; font-family: var(--serif); font-weight: 500;
  font-size: 44px; line-height: 1.15; letter-spacing: -0.01em; margin-top: 2px;
  font-variant-numeric: tabular-nums;
}
.ins-amount b span { font-size: 22px; color: var(--muted); }
.spark { width: 100%; height: 44px; margin-top: 8px; }
.ins-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line);
  margin: 20px -24px 0; border-top: 1px solid var(--line);
}
.ins-grid > div { background: var(--paper); padding: 14px 18px; display: flex; flex-direction: column; }
.ins-grid span { font-size: 10px; color: var(--muted); letter-spacing: 0.08em; }
.ins-grid b { font-family: var(--serif); font-size: 22px; font-weight: 500; margin-top: 2px; font-variant-numeric: tabular-nums; }
.ins-grid i { font-style: normal; font-size: 10px; color: var(--green); }
.ins-grid i.warn { color: var(--coral); }
.ins-rx { margin: 18px 0 0; border: 1px solid var(--line); padding: 14px 16px; background: var(--paper-2); }
.rx-title { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; color: var(--muted); }
.rx-table {
  display: grid; grid-template-columns: 22px repeat(4, 1fr);
  gap: 4px 6px; margin-top: 10px; font-size: 11px; text-align: center;
}
.rx-table span { color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; }
.rx-table b { font-family: var(--mono); font-weight: 500; font-size: 12px; font-variant-numeric: tabular-nums; }
.rx-note { margin-top: 10px; font-size: 10.5px; color: var(--muted); }
.ins-foot {
  display: flex; align-items: center; gap: 9px;
  margin: 18px -24px 0; padding: 12px 24px;
  border-top: 1px solid var(--line); background: var(--paper-2);
  font-size: 10.5px; color: var(--muted); letter-spacing: 0.04em;
}
.pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

.scroll-cue {
  position: absolute; left: clamp(20px, 4vw, 56px); bottom: 30px; z-index: 3;
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.3em;
  color: rgba(247, 244, 238, 0.38);
}
.scroll-cue i { display: block; width: 1px; height: 44px; background: linear-gradient(to bottom, var(--brass), transparent); position: relative; overflow: hidden; }
.scroll-cue i::after { content: ""; position: absolute; left: 0; top: -44px; width: 1px; height: 24px; background: var(--brass); animation: cue 2.6s var(--ease) infinite; }
@keyframes cue { to { top: 44px; } }
.scroll-cue:hover { color: var(--brass); }

/* reveal */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.js .reveal.d1 { transition-delay: 0.08s; }
.js .reveal.d2 { transition-delay: 0.18s; }
.js .reveal.d3 { transition-delay: 0.28s; }
.js .reveal.d4 { transition-delay: 0.38s; }

/* ticker */
.rule-ticker { background: var(--ink-2); color: rgba(247, 244, 238, 0.55); overflow: hidden; border-top: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); }
.ticker-track {
  display: flex; align-items: center; gap: 34px; white-space: nowrap;
  padding: 14px 0; width: max-content; animation: marquee 38s linear infinite;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
}
.ticker-track i { color: var(--brass); font-style: normal; }
@keyframes marquee { to { transform: translateX(-50%); } }
.rule-ticker:hover .ticker-track { animation-play-state: paused; }

/* sections */
.section { padding: clamp(72px, 9vw, 118px) clamp(20px, 4vw, 56px); }
.section > * { max-width: var(--max); margin-left: auto; margin-right: auto; }
.section-head { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: end; margin-bottom: 56px; }
.section-head .eyebrow { margin-bottom: 18px; color: var(--brass-2); }
.section h2 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(34px, 4.2vw, 56px); line-height: 1.12; letter-spacing: -0.01em;
}
.section-lead { color: var(--muted); font-size: 14.5px; max-width: 44ch; padding-bottom: 6px; }

/* systems */
.systems { background: var(--paper); }
.system-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.system-card { background: var(--paper); padding: 34px 34px 26px; display: flex; flex-direction: column; min-height: 340px; transition: background 0.3s; }
.system-card:hover { background: #fbf8f2; }
.sc-top { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.sc-top .mono { font-size: 10px; letter-spacing: 0.2em; color: var(--brass-2); }
.sc-tag { font-size: 10.5px; letter-spacing: 0.18em; color: var(--muted); }
.system-card h3 { font-family: var(--serif); font-size: 26px; font-weight: 500; margin-top: 22px; letter-spacing: 0.01em; }
.system-card p { color: var(--muted); font-size: 13.5px; margin-top: 10px; max-width: 40ch; }
.system-card ul { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.system-card li { font-size: 11.5px; color: var(--ink-3); position: relative; padding-left: 12px; }
.system-card li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 4px; height: 4px; background: var(--brass); }
.sc-art { margin-top: auto; padding-top: 24px; }
.sc-art svg { width: 100%; height: 84px; }

/* flow */
.flow { background: var(--paper-2); }
.flow-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); }
.flow-list li {
  position: relative; padding: 26px 24px 30px; border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line); min-height: 190px; display: flex; flex-direction: column;
  transition: background 0.3s;
}
.flow-list li:nth-child(4n) { border-right: 0; }
.flow-list li:hover { background: rgba(200, 164, 92, 0.08); }
.fl-no { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; color: var(--brass-2); }
.flow-list h3 { font-family: var(--serif); font-size: 21px; font-weight: 500; margin-top: 12px; }
.flow-list p { font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.8; }
.fl-sys {
  margin-top: auto; padding-top: 18px; font-size: 9.5px; letter-spacing: 0.16em;
  color: var(--teal); font-family: var(--mono); text-transform: uppercase;
}

/* roles */
.roles { background: var(--paper); }
.role-table { border-top: 1px solid var(--line-strong); }
.rt-row {
  display: grid; grid-template-columns: 1.05fr 1.35fr 1.35fr 1fr;
  gap: 20px; padding: 18px 6px; border-bottom: 1px solid var(--line);
  align-items: center; font-size: 12.5px; color: var(--ink-3);
  transition: background 0.25s;
}
.rt-row:hover { background: rgba(200, 164, 92, 0.06); }
.rt-head {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.2em; color: var(--muted);
  text-transform: uppercase; padding: 10px 6px;
}
.rt-row span:first-child { display: flex; flex-direction: column; }
.rt-row b { font-family: var(--serif); font-size: 19px; font-weight: 500; }
.rt-row i { font-style: normal; font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.2em; color: var(--brass-2); margin-top: 2px; text-transform: uppercase; }

/* screens */
.screens { background: var(--ink); color: var(--paper); }
.screens .eyebrow { color: var(--brass); }
.screens .section-lead { color: rgba(247, 244, 238, 0.55); }
.screen-pair { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr); gap: clamp(26px, 4vw, 64px); align-items: center; }
.screen-pair figure { margin: 0; }
.screen-admin .browser-bar {
  display: flex; align-items: center; gap: 7px; padding: 10px 14px;
  background: var(--ink-3); border: 1px solid var(--line-light); border-bottom: 0;
  border-radius: 3px 3px 0 0; font-family: var(--mono); font-size: 9px; color: rgba(247,244,238,.45);
}
.browser-bar span { width: 7px; height: 7px; border-radius: 50%; background: rgba(247, 244, 238, 0.25); }
.browser-bar em { font-style: normal; margin-left: 10px; letter-spacing: 0.08em; }
.admin-mock {
  display: grid; grid-template-columns: 150px 1fr; background: var(--paper); color: var(--ink);
  border: 1px solid var(--line-light); min-height: 360px;
}
.admin-mock aside { background: var(--ink-2); color: var(--paper); padding: 18px 16px; display: flex; flex-direction: column; gap: 20px; }
.am-brand { display: flex; align-items: center; gap: 8px; font-family: var(--serif); font-size: 16px; letter-spacing: 0.1em; }
.am-ring { width: 16px; height: 16px; border: 1px solid var(--brass); border-radius: 50%; position: relative; }
.am-ring::after { content: ""; position: absolute; inset: 4px; border: 1px solid rgba(200,164,92,.6); border-radius: 50%; }
.am-nav { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: rgba(247,244,238,.55); }
.am-nav span { padding: 7px 9px; border-left: 1px solid transparent; }
.am-nav span.on { color: var(--brass); border-left-color: var(--brass); background: rgba(200,164,92,.07); }
.am-foot { margin-top: auto; font-family: var(--mono); font-size: 8px; letter-spacing: .16em; color: rgba(247,244,238,.3); }
.am-main { padding: 20px 22px; }
.am-head { display: flex; align-items: baseline; justify-content: space-between; }
.am-head b { font-family: var(--serif); font-size: 18px; font-weight: 500; }
.am-head span { font-size: 9.5px; color: var(--muted); }
.am-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 16px; }
.am-kpis > div { background: var(--paper); padding: 10px 12px; display: flex; flex-direction: column; }
.am-kpis span { font-size: 9px; color: var(--muted); }
.am-kpis b { font-family: var(--serif); font-size: 19px; font-weight: 500; font-variant-numeric: tabular-nums; }
.am-kpis i { font-style: normal; font-size: 8.5px; color: var(--green); }
.am-kpis i.warn { color: var(--coral); }
.am-chart { margin-top: 16px; border: 1px solid var(--line); padding: 8px; }
.am-chart svg { width: 100%; height: auto; }
.am-list { margin-top: 14px; display: flex; flex-direction: column; }
.am-list div { display: grid; grid-template-columns: 42px 70px 1fr; gap: 10px; font-size: 10px; padding: 7px 0; border-top: 1px solid var(--line); color: var(--muted); }
.am-list b { color: var(--ink); font-weight: 500; }
.am-list i { font-style: normal; text-align: right; }
.screen-pair figcaption { margin-top: 14px; font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.16em; color: rgba(247, 244, 238, 0.42); text-transform: uppercase; }

.phone {
  width: min(300px, 86%); margin: 0 auto; border: 8px solid #08121a; border-radius: 34px;
  background: #08121a; box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5); position: relative;
}
.phone-notch { position: absolute; top: 8px; left: 50%; transform: translateX(-50%); width: 92px; height: 18px; background: #08121a; border-radius: 0 0 12px 12px; z-index: 2; }
.phone-screen { background: var(--paper); color: var(--ink); border-radius: 26px; overflow: hidden; padding: 30px 14px 0; min-height: 540px; display: flex; flex-direction: column; }
.ps-head { display: flex; justify-content: space-between; align-items: center; font-family: var(--serif); font-size: 15px; letter-spacing: 0.08em; }
.ps-store { font-family: var(--sans); font-size: 9px; color: var(--muted); border: 1px solid var(--line); padding: 3px 8px; }
.ps-hero { margin-top: 14px; background: var(--ink); color: var(--paper); padding: 18px; position: relative; overflow: hidden; }
.ps-hero::after { content: ""; position: absolute; right: -34px; top: -34px; width: 110px; height: 110px; border: 1px solid rgba(200,164,92,.4); border-radius: 50%; }
.ps-hero p { font-size: 8.5px; letter-spacing: .18em; color: var(--brass); font-family: var(--mono); }
.ps-hero h3 { font-family: var(--serif); font-size: 23px; font-weight: 500; margin-top: 8px; line-height: 1.25; }
.ps-btn { display: inline-block; margin-top: 14px; background: var(--brass); color: var(--ink); font-size: 10px; padding: 7px 14px; letter-spacing: .06em; }
.ps-quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 14px; }
.ps-quick span { text-align: center; font-size: 9.5px; padding: 10px 0; border: 1px solid var(--line); }
.ps-sec { display: flex; justify-content: space-between; align-items: baseline; margin-top: 18px; font-size: 11px; }
.ps-sec b { font-family: var(--serif); font-size: 15px; font-weight: 500; }
.ps-sec span { font-size: 8.5px; color: var(--muted); }
.ps-products { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.ps-products > div { border: 1px solid var(--line); padding: 8px; display: flex; flex-direction: column; gap: 3px; }
.ps-frame { display: block; height: 44px; background: linear-gradient(135deg, #d9d3c6, #f2ede3); position: relative; }
.ps-frame::before, .ps-frame::after { content: ""; position: absolute; top: 12px; width: 18px; height: 18px; border: 2px solid #2a2a2a; border-radius: 50%; }
.ps-frame::before { left: 14px; } .ps-frame::after { right: 14px; }
.ps-products b { font-size: 9.5px; font-weight: 500; }
.ps-products i { font-style: normal; font-size: 10px; color: var(--brass-2); }
.ps-tab { margin: 16px -14px 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); padding: 10px 0 8px; background: var(--paper-2); }
.ps-tab span { text-align: center; font-size: 9px; color: var(--muted); }
.ps-tab span.on { color: var(--teal); }

/* delivery */
.delivery { background: var(--paper); }
.delivery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.delivery-grid article { background: var(--paper); padding: 32px 30px 34px; }
.delivery-grid .mono { font-size: 10px; color: var(--brass-2); letter-spacing: .2em; }
.delivery-grid h3 { font-family: var(--serif); font-size: 24px; font-weight: 500; margin-top: 18px; }
.delivery-grid p { color: var(--muted); font-size: 13px; margin-top: 10px; }
.delivery-grid ul { margin-top: 18px; display: flex; flex-direction: column; gap: 7px; }
.delivery-grid li { font-size: 11.5px; color: var(--ink-3); padding-left: 13px; position: relative; }
.delivery-grid li::before { content: ""; position: absolute; left: 0; top: .7em; width: 5px; height: 1px; background: var(--brass); }

/* pricing */
.pricing { background: var(--paper-2); }
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
.price-card {
  position: relative; background: var(--paper); border: 1px solid var(--line);
  padding: 32px 30px; display: flex; flex-direction: column;
  transition: transform .3s var(--ease), border-color .3s;
}
.price-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.price-card.featured { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.price-flag { position: absolute; top: 0; right: 0; background: var(--brass); color: var(--ink); font-size: 9px; letter-spacing: .14em; padding: 5px 12px; }
.price-card header { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.price-card.featured header { border-color: var(--line-light); }
.price-card header span { font-family: var(--serif); font-size: 20px; }
.price-card header i { font-style: normal; font-family: var(--mono); font-size: 9px; letter-spacing: .16em; color: var(--muted); }
.price-card.featured header i { color: rgba(247,244,238,.5); }
.price { display: block; font-family: var(--serif); font-weight: 500; font-size: 42px; margin-top: 20px; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.price small { font-size: 16px; color: var(--muted); margin-left: 4px; }
.price-card.featured .price small { color: rgba(247,244,238,.55); }
.price-card p { color: var(--muted); font-size: 12.5px; margin-top: 10px; min-height: 56px; }
.price-card.featured p { color: rgba(247,244,238,.6); }
.price-card ul { margin: 20px 0 26px; display: flex; flex-direction: column; gap: 9px; }
.price-card li { font-size: 12px; padding-left: 15px; position: relative; }
.price-card li::before { content: ""; position: absolute; left: 0; top: .68em; width: 6px; height: 1px; background: var(--brass); }
.price-card .btn { margin-top: auto; justify-content: center; }
.price-card.featured .btn-line { border-color: rgba(247,244,238,.3); }
.price-note { text-align: center; font-size: 11px; color: var(--muted); margin-top: 24px; }

/* faq */
.faq { background: var(--paper); }
.faq-list { border-top: 1px solid var(--line-strong); max-width: var(--max); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 22px 40px 22px 4px; position: relative;
  font-family: var(--serif); font-size: 20px; font-weight: 500;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-family: var(--sans); font-size: 20px; font-weight: 300; color: var(--brass-2); transition: transform .25s;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 40px 26px 4px; color: var(--muted); font-size: 13.5px; max-width: 78ch; }

/* contact */
.contact {
  background: var(--ink); color: var(--paper); text-align: center;
  position: relative; overflow: hidden;
}
.contact::before {
  content: ""; position: absolute; width: 620px; height: 620px; border: 1px solid rgba(200,164,92,.18);
  border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%, -50%);
}
.contact::after {
  content: ""; position: absolute; width: 420px; height: 420px; border: 1px solid rgba(247,244,238,.08);
  border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%, -50%);
}
.contact-inner { position: relative; z-index: 1; max-width: 760px; }
.contact .eyebrow { color: var(--brass); }
.contact h2 { font-family: var(--serif); font-size: clamp(38px, 5vw, 64px); font-weight: 500; line-height: 1.1; }
.contact > .contact-inner > p:not(.eyebrow):not(.contact-line) { color: rgba(247,244,238,.6); margin-top: 22px; font-size: 14px; }
.contact .cta-row { justify-content: center; }
.contact-line { margin-top: 30px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .14em; color: rgba(247,244,238,.4); }

/* footer */
.footer { background: var(--paper-2); padding: 60px clamp(20px, 4vw, 56px) 26px; }
.foot-main { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; }
.foot-brand .brand-text b { font-size: 22px; }
.foot-brand p { color: var(--muted); font-size: 12px; margin-top: 14px; line-height: 1.9; }
.foot-col { display: flex; flex-direction: column; gap: 9px; font-size: 12px; color: var(--muted); }
.foot-col b { font-size: 10px; letter-spacing: .18em; color: var(--ink); font-family: var(--mono); text-transform: uppercase; margin-bottom: 4px; }
.foot-col a:hover { color: var(--brass-2); }
.foot-legal {
  max-width: var(--max); margin: 48px auto 0; padding-top: 18px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 10.5px; color: var(--muted);
}
.legal-links { display: flex; gap: 18px; flex-wrap: wrap; }
.legal-links a:hover { color: var(--brass-2); }
html:not(.site-ours) .js-back { display: none !important; }

/* responsive */
@media (max-width: 1080px) {
  .hero { grid-template-columns: 1fr; padding-top: 150px; }
  .hero-ring { right: -260px; width: 80vw; opacity: .5; }
  .instrument { justify-self: start; transform: none; margin-top: 20px; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); }
  .section-head { grid-template-columns: 1fr; gap: 22px; }
  .screen-pair { grid-template-columns: 1fr; }
  .screen-phone { order: -1; }
  .phone { width: 280px; }
}
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-actions .ghost { display: none; }
  .nav-actions { margin-left: auto; }
  .scroll-cue { display: none; }
  .system-grid { grid-template-columns: 1fr; }
  .flow-list { grid-template-columns: repeat(2, 1fr); }
  .flow-list li:nth-child(4n) { border-right: 1px solid var(--line); }
  .flow-list li:nth-child(2n) { border-right: 0; }
  .delivery-grid, .price-grid { grid-template-columns: 1fr; }
  .price-card.featured { transform: none; }
  .role-table .rt-head { display: none; }
  .rt-row { grid-template-columns: 1fr 1fr; gap: 12px 20px; padding: 20px 4px; }
  .rt-row span:nth-child(1) { grid-column: 1 / -1; }
  .rt-row span:nth-child(2)::before, .rt-row span:nth-child(3)::before, .rt-row span:nth-child(4)::before {
    display: block; font-family: var(--mono); font-size: 8.5px; letter-spacing: .16em; color: var(--muted); margin-bottom: 2px;
  }
  .rt-row span:nth-child(2)::before { content: "看得见"; }
  .rt-row span:nth-child(3)::before { content: "做得了"; }
  .rt-row span:nth-child(4)::before { content: "禁区"; }
  .foot-main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .hero { padding-top: 128px; }
  .hero h1 { font-size: 40px; }
  .lead { font-size: 14px; }
  .cta-row .btn { width: 100%; justify-content: center; }
  .hero-facts { gap: 16px 12px; margin-top: 44px; }
  .instrument { padding: 20px 20px 0; }
  .ins-grid { margin-left: -20px; margin-right: -20px; }
  .ins-foot { margin-left: -20px; margin-right: -20px; }
  .section { padding-left: 18px; padding-right: 18px; }
  .system-card { padding: 26px 22px 22px; min-height: 0; }
  .flow-list { grid-template-columns: 1fr; }
  .flow-list li { border-right: 0 !important; min-height: 0; }
  .rt-row { grid-template-columns: 1fr; }
  .rt-row span:nth-child(2), .rt-row span:nth-child(3), .rt-row span:nth-child(4) { padding-left: 0; }
  .admin-mock { grid-template-columns: 1fr; }
  .admin-mock aside { display: none; }
  .phone { width: 100%; max-width: 310px; }
  .foot-main { grid-template-columns: 1fr; gap: 28px; }
  .foot-legal { flex-direction: column; }
  .ticker-track { animation-duration: 26s; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}