:root {
  color-scheme: light;
  --ink: #1c1a17;
  --muted: #5f584e;
  --blue: #0048e8;
  --line: #e5e7eb;
  --paper: #ffffff;
  --sheet: #f9fafb;
  --sans: "Bricolage Grotesque", "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --wrap: 1080px;
  --hit: #157a45;
  --miss: #9a3412;
  --wait: #9a6700;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
button, input { font: inherit; color: inherit; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; line-height: 1.2; letter-spacing: 0; text-wrap: balance; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap { width: min(var(--wrap), calc(100% - 48px)); margin: 0 auto; }
.skip {
  position: absolute; left: 12px; top: 12px; transform: translateY(-160%);
  background: var(--ink); color: var(--paper);
  padding: 8px 12px; z-index: 40; text-decoration: none;
}
.skip:focus { transform: none; }

.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; text-decoration: none; }
.brand img { height: 36px; width: auto; }
.brand em { font-style: normal; font-size: 13px; color: var(--muted); font-weight: 500; }
.menu { display: flex; align-items: center; gap: 28px; }
.nav { display: flex; gap: 22px; }
.nav a { text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--blue); }
.header-actions { display: flex; gap: 8px; }
.nav-toggle {
  display: none; margin-left: auto; border: 1px solid var(--line); background: transparent;
  height: 36px; padding: 0 12px; cursor: pointer;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 42px; padding: 0 16px; border: 1px solid transparent;
  text-decoration: none; font-weight: 500; cursor: pointer; background: transparent;
  transition: background 160ms ease-out, color 160ms ease-out, border-color 160ms ease-out, transform 120ms ease-out;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--blue); }
.btn-ghost { background: transparent; border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn:focus-visible, a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--blue); outline-offset: 2px;
}

.hero { padding: 72px 0 36px; }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 48px;
  align-items: center;
}
.hero-copy { max-width: none; }
.shot { margin: 0; border: 1px solid var(--line); background: #f3f5f8; }
.hero .shot { margin: 0; width: auto; }
.shot img { width: 100%; height: auto; display: block; }
.eyebrow { color: var(--muted); font-size: 13px; font-weight: 500; margin-bottom: 16px; }
.hero h1 { font-size: clamp(32px, 3.2vw, 48px); max-width: none; }
.lede { margin-top: 20px; color: var(--muted); font-size: 17px; max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.chain {
  display: flex; flex-wrap: wrap; align-items: baseline;
  margin: 32px 0 0; padding: 14px 0 0; list-style: none;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 14px;
}
.chain li + li::before { content: " / "; color: #b3aa9c; margin: 0 6px; }
.chain strong { color: var(--ink); font-weight: 600; }

.result {
  border: 1px solid var(--line);
  background: var(--sheet);
  padding: 16px 16px 8px;
}
.result-top {
  display: flex; justify-content: space-between; gap: 12px;
  font-size: 12px; color: var(--muted); margin-bottom: 12px;
}
.result-top b { color: var(--ink); font-weight: 600; font-size: 14px; display: block; }
.row {
  display: grid; grid-template-columns: 64px 1fr; gap: 10px;
  padding: 12px 0; border-top: 1px solid var(--line);
}
.tag { font-size: 12px; font-weight: 600; padding-top: 2px; }
.tag.hit { color: var(--hit); }
.tag.wait { color: var(--wait); }
.tag.miss { color: var(--miss); }
.row strong { display: block; font-size: 15px; font-weight: 600; }
.row span { display: block; color: var(--muted); font-size: 13px; line-height: 1.5; }
.result-foot { margin-top: 4px; padding: 10px 0 8px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }

.block { padding: 96px 0; }
.mist { background: var(--sheet); }
.block-head { max-width: 640px; margin-bottom: 48px; }
.block-head h2 { font-size: clamp(30px, 3.4vw, 42px); }
.block-head p { margin-top: 14px; color: var(--muted); font-size: 17px; }

.scale {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
}
.scale article { border-right: 1px solid var(--line); padding: 22px 18px 8px 0; }
.scale article:last-child { border-right: 0; padding-right: 0; }
.scale article:not(:first-child) { padding-left: 18px; }
.scale h3 { font-size: 22px; }
.scale p { color: var(--muted); margin-top: 8px; font-size: 15px; }

.force-list { border-top: 1px solid var(--ink); margin-top: 56px; }
.force-list article {
  display: grid; grid-template-columns: 200px minmax(0, 1fr) 200px; gap: 20px 28px;
  align-items: center;
  padding: 22px 0; border-bottom: 1px solid var(--line);
}
.force-list figure { margin: 0 0 0 auto; width: 200px; border: 0; background: transparent; }
.force-list img { width: 100%; height: auto; display: block; }
.force-list h3 { font-size: 26px; }
.force-list p { color: var(--muted); font-size: 16px; }

.features { display: grid; grid-template-columns: 1fr 1fr; gap: 0 64px; counter-reset: feat; }
.features article { border-top: 1px solid var(--line); padding: 28px 0 20px; counter-increment: feat; }
.features h3 { font-size: 22px; margin-bottom: 8px; }
.features h3::before {
  content: counter(feat, decimal-leading-zero);
  display: block;
  margin-bottom: 10px;
  color: #b3aa9c;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
}
.features p { color: var(--muted); max-width: 36em; }

.split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.split + .split { margin-top: 96px; }
.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }
.kicker { color: var(--muted); font-size: 13px; font-weight: 500; }
.split h3 { font-size: 32px; margin: 8px 0 12px; }
.ticks li { padding: 9px 0; border-top: 1px solid var(--line); }

.console {
  background: #f3f5f8;
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 148px 1fr;
  min-height: 320px;
  color: #1c2430;
}
.side {
  background: #fff;
  border-right: 1px solid var(--line);
  padding: 16px 12px;
  display: grid;
  align-content: start;
  gap: 6px;
  font-size: 13px;
  color: #5c6570;
}
.side b { color: #111827; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.side .on { background: #e8f0ff; color: #1d4ed8; padding: 6px 8px; }
.side span { padding: 6px 8px; }
.main { padding: 16px 18px 18px; }
.main-top { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; margin-bottom: 14px; }
.main-top b { font-size: 16px; }
.main-top span { color: #6b7280; font-size: 12px; }
.steps-mini { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.steps-mini div { background: #fff; border: 1px solid var(--line); padding: 8px 10px; font-size: 12px; color: #6b7280; }
.steps-mini strong { display: block; color: #111827; font-size: 13px; font-weight: 600; }
.steps-mini .now { border-color: #bfdbfe; background: #eff6ff; }
.cols { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 8px; }
.panel { background: #fff; border: 1px solid var(--line); padding: 12px; }
.panel h4 { margin: 0 0 8px; font-size: 13px; font-weight: 600; }
.panel li { display: flex; justify-content: space-between; gap: 8px; padding: 7px 0; border-top: 1px solid var(--line); font-size: 13px; }
.panel em { font-style: normal; color: #6b7280; }
.pipe { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 4px; }
.pipe span {
  background: #fff; border: 1px solid var(--line); padding: 10px 8px;
  font-size: 13px; text-align: center;
}
.pipe span + span { position: relative; }
.pipe span:not(:first-child)::before {
  content: "→"; position: absolute; left: -7px; top: 50%; transform: translateY(-50%);
  color: #9ca3af; background: #f3f5f8; font-size: 12px; line-height: 1;
}

.steps { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; margin: 0; padding: 0; list-style: none; }
.steps li { border-top: 1px solid var(--line); padding: 22px 0 24px; }
.steps b { display: block; color: var(--muted); font-size: 13px; font-weight: 500; letter-spacing: 0.08em; margin-bottom: 6px; }
.steps strong { display: block; font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.steps span { color: var(--muted); }

.roles { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; }
.roles article { border-top: 1px solid var(--ink); padding-top: 16px; }
.roles .kicker { margin-bottom: 8px; }
.roles h3 { font-size: 26px; margin-bottom: 8px; }
.roles p { color: var(--muted); }

.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 0;
  font-size: 18px; font-weight: 600; display: flex; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 500; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); padding: 0 0 16px; max-width: 42em; }

.close {
  background: var(--paper);
  padding: 72px 0;
  border-top: 1px solid var(--line);
}
.close-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.close h2 { font-size: clamp(30px, 3.6vw, 44px); }
.close .quiet { color: var(--muted); margin-top: 16px; max-width: 28em; }
.contact { background: var(--sheet); border: 1px solid var(--line); padding: 22px; display: grid; gap: 0; }
.contact a, .contact div { display: block; text-decoration: none; padding: 12px 0; border-top: 1px solid var(--line); }
.contact a:first-child, .contact div:first-child { border-top: 0; padding-top: 0; }
.contact small { display: block; color: var(--muted); font-size: 13px; }
.contact b { font-weight: 600; }
.contact a:hover b { color: var(--blue); }

.site-footer { padding: 22px 0 36px; color: var(--muted); font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; align-items: center; border-top: 1px solid var(--line); padding-top: 16px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

.mobile-bar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 25;
  background: var(--paper); border-top: 1px solid var(--line);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom)); gap: 8px;
}
.mobile-bar .btn { flex: 1; }

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .menu {
    display: none; position: absolute; left: 0; right: 0; top: 68px;
    flex-direction: column; align-items: stretch; gap: 12px;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 20px 16px;
  }
  .site-header.open .menu { display: flex; }
  .nav, .header-actions { flex-direction: column; align-items: stretch; }
  .hero .wrap, .hero-layout, .split, .split.reverse, .close-grid, .steps, .roles, .features {
    grid-template-columns: 1fr; direction: ltr;
  }
  .force-list article { grid-template-columns: 1fr; gap: 12px; }
  .force-list figure { margin-left: 0; }
  .scale { grid-template-columns: 1fr 1fr; }
  .scale article { border-right: 0; border-top: 1px solid var(--line); padding: 16px 0; }
  .scale article:not(:first-child) { padding-left: 0; }
  .console { grid-template-columns: 1fr; min-height: 0; }
  .side { border-right: 0; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 4px 8px; }
  .side b { width: 100%; }
  .hero { padding-top: 40px; }
  .hero .shot { width: 100%; margin-top: 8px; }
}
@media (max-width: 640px) {
  .scale, .cols, .steps-mini { grid-template-columns: 1fr; }
  .wrap { width: min(var(--wrap), calc(100% - 32px)); }
  .brand em { display: none; }
}
.js .rise {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 640ms ease-out, transform 640ms ease-out;
}
.js .rise.in { opacity: 1; transform: none; }
.scale article.rise:nth-child(2),
.features article.rise:nth-child(even) { transition-delay: 70ms; }
.scale article.rise:nth-child(3) { transition-delay: 140ms; }
.scale article.rise:nth-child(4) { transition-delay: 210ms; }
.steps li.rise:nth-child(even) { transition-delay: 80ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .js .rise { opacity: 1; transform: none; transition: none; }
}