/* OrderFlow portfolio — calm BtoB layout. System fonts only (no external requests). */
:root {
  --bg: #ffffff;
  --bg-band: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2430;
  --text-2: #4a5566;
  --text-3: #6b7585;
  --line: #dde2e8;
  --accent: #1f5fbf;
  --accent-soft: #e8f0fb;
  --accent-text: #174a96;
  --ok: #1d7a46;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 8px rgba(16, 24, 40, .04);
  --radius: 10px;
  --font: "BIZ UDPGothic", "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "SFMono-Regular", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161c; --bg-band: #171c23; --surface: #1b2129; --text: #e6e9ee; --text-2: #b4bcc8; --text-3: #8d97a6;
    --line: #2c3440; --accent: #6ea2ee; --accent-soft: #1b2a40; --accent-text: #9cc0f5; --ok: #5cc28a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12161c; --bg-band: #171c23; --surface: #1b2129; --text: #e6e9ee; --text-2: #b4bcc8; --text-3: #8d97a6;
  --line: #2c3440; --accent: #6ea2ee; --accent-soft: #1b2a40; --accent-text: #9cc0f5; --ok: #5cc28a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3); color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 16px; line-height: 1.75; }
img, video { max-width: 100%; display: block; }
a { color: var(--accent-text); text-underline-offset: 3px; }
code { font-family: var(--mono); font-size: .88em; background: var(--accent-soft); color: var(--accent-text); padding: .05em .4em; border-radius: 4px; }
h1, h2, h3 { line-height: 1.35; margin: 0; }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.85rem); letter-spacing: .01em; }
h3 { font-size: 1.05rem; }
p { margin: .6em 0; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
section { padding: clamp(48px, 6vw, 88px) 0; }
.band { background: var(--bg-band); border-block: 1px solid var(--line); }
.section-lead { color: var(--text-2); max-width: 46em; margin: .8em 0 1.8em; }
h2 + .cards, h2 + .capabilities, h2 + .limits { margin-top: 1.4em; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 56px; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; letter-spacing: .02em; }
.topnav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.topnav::-webkit-scrollbar { display: none; }
.topnav a { color: var(--text-2); text-decoration: none; font-size: .9rem; padding: 6px 10px; border-radius: 6px; white-space: nowrap; }
.topnav a:hover { background: var(--accent-soft); color: var(--accent-text); }
@media (max-width: 720px) { .topnav { display: none; } }

/* Hero */
.hero { padding-top: clamp(36px, 5vw, 64px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.eyebrow { color: var(--accent-text); font-weight: 700; font-size: .85rem; letter-spacing: .06em; margin: 0 0 .4em; }
.hero h1 { font-size: clamp(2.4rem, 1.6rem + 3vw, 3.6rem); letter-spacing: .01em; }
.lead { font-size: clamp(1.1rem, 1rem + .5vw, 1.35rem); font-weight: 700; margin: .2em 0 1em; }
.hero-desc { color: var(--text-2); }
.hero-facts { list-style: none; padding: 0; margin: 1.4em 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.hero-facts li { border: 1px solid var(--line); border-radius: 8px; padding: 10px 8px; text-align: center; background: var(--surface); }
.hero-facts b { display: block; font-size: 1.25rem; color: var(--accent-text); line-height: 1.2; }
/* Labels may wrap only between words ("Project / Complete"), never mid-word. */
.hero-facts span { display: block; font-size: .72rem; line-height: 1.35; color: var(--text-3); overflow-wrap: normal; word-break: keep-all; text-wrap: balance; }
.video-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 8px; }
.video-tabs button { font: inherit; font-size: .95rem; font-weight: 700; padding: 7px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--text-2); cursor: pointer; display: flex; flex-direction: column; align-items: center; line-height: 1.35; }
.video-tabs button small { font-weight: 400; font-size: .74rem; color: var(--text-3); }
.video-tabs button span { white-space: nowrap; }
.video-tabs button[aria-selected="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-text); }
.video-tabs button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#player { width: 100%; aspect-ratio: 16 / 9; background: #0e1116; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); }
.video-note { font-size: .88rem; color: var(--text-2); margin: .7em 0 .2em; }
.video-links { font-size: .82rem; color: var(--text-3); margin: 0; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .hero-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Flow */
.flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 10px; counter-reset: none; }
.flow li { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 12px 12px; box-shadow: var(--shadow); }
.flow li b { display: block; font-size: .98rem; margin: 6px 0 4px; }
.flow li span:not(.step-no) { display: block; font-size: .82rem; color: var(--text-2); line-height: 1.6; }
.step-no { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-text); font-size: .8rem; font-weight: 700; }
.flow li.branch { border-style: dashed; }
.flow li.accent { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.flow li:not(:last-child)::after { content: "→"; position: absolute; right: -9px; top: 50%; transform: translateY(-50%); color: var(--text-3); font-size: .85rem; background: var(--bg-band); line-height: 1; padding: 2px 0; }
.flow-note { color: var(--text-2); font-size: .92rem; margin-top: 1.2em; border-left: 3px solid var(--accent); padding: .2em 0 .2em .9em; }
@media (max-width: 1000px) {
  .flow { grid-template-columns: 1fr; gap: 12px; }
  .flow li { display: grid; grid-template-columns: 32px 1fr; column-gap: 10px; }
  .flow li b { margin: 0; grid-column: 2; }
  .flow li span:not(.step-no) { grid-column: 2; }
  .step-no { grid-row: span 2; }
  .flow li:not(:last-child)::after { content: "↓"; right: auto; left: 22px; top: auto; bottom: -13px; transform: none; padding: 0 4px; }
}

/* Cards */
.cards { display: grid; gap: 14px; }
.cards-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 18px; }
.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 14px; box-shadow: var(--shadow); }
.card h3 { margin-bottom: .35em; }
.card p { color: var(--text-2); font-size: .93rem; margin: .4em 0; }
@media (max-width: 1000px) { .cards-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .cards-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .cards-2, .cards-3, .cards-4 { grid-template-columns: 1fr; } }
.tech { font-size: .84rem !important; color: var(--text-3) !important; border-top: 1px dashed var(--line); padding-top: .6em; margin-top: .8em !important; }
.plain { margin: 0; padding-left: 1.1em; color: var(--text-2); font-size: .92rem; }

.feature-list { margin-top: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; }
.feature-list summary { cursor: pointer; font-weight: 700; color: var(--accent-text); }
.fids { columns: 2; column-gap: 28px; padding-left: 0; list-style: none; margin: 12px 0 4px; font-size: .88rem; color: var(--text-2); }
.fids li { break-inside: avoid; padding: 3px 0; }
.fid { font-family: var(--mono); font-size: .8rem; color: var(--text-3); margin-right: 8px; }
@media (max-width: 640px) { .fids { columns: 1; } }
.ui-note { margin-top: 18px; font-size: .9rem; color: var(--text-2); }
.ui-note b { color: var(--text); margin-right: .6em; }

/* Logic */
.logic { display: grid; gap: 22px; margin-bottom: 22px; }
.logic-item { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 24px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.logic-item h3 { font-size: 1.15rem; }
.logic-text p { color: var(--text-2); }
@media (max-width: 860px) { .logic-item { grid-template-columns: 1fr; } }
figure { margin: 0; }
figure img { border-radius: 8px; border: 1px solid var(--line); background: #fff; width: 100%; height: auto; }
figcaption { font-size: .8rem; color: var(--text-3); margin-top: 6px; }
.shots-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 22px 0; }
@media (max-width: 720px) { .shots-2 { grid-template-columns: 1fr; } }
figure.wide { margin-top: 22px; max-width: 880px; }

/* Roles */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table.roles { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 600px; }
.roles caption { text-align: left; padding: 12px 16px 0; color: var(--text-3); font-size: .82rem; }
.roles th, .roles td { text-align: left; vertical-align: top; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.roles thead th { font-size: .8rem; color: var(--text-3); font-weight: 700; }
.roles tbody tr:last-child > * { border-bottom: 0; }
.roles tbody th { white-space: nowrap; font-weight: 700; }
.roles td:last-child { color: var(--text-2); }
.checks { padding-left: 0; list-style: none; margin: 0; display: grid; gap: 8px; }
.checks li { padding-left: 1.6em; position: relative; color: var(--text-2); }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 700; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.stat b { display: block; font-size: clamp(1.5rem, 1.2rem + 1vw, 1.9rem); color: var(--accent-text); line-height: 1.2; letter-spacing: .01em; }
.stat span { display: block; font-weight: 700; margin-top: 4px; }
.stat small { display: block; color: var(--text-3); font-size: .8rem; line-height: 1.55; margin-top: 4px; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.kv { list-style: none; padding: 0; margin: .4em 0 0; font-size: .92rem; }
.kv li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.kv li:last-child { border-bottom: 0; }
.kv span { color: var(--text-2); }
.kv b { text-align: right; }

/* Process */
.pipeline { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.pipeline li { padding: 14px 12px; border-right: 1px solid var(--line); position: relative; }
.pipeline li:last-child { border-right: 0; background: var(--accent-soft); }
.pipeline b { display: block; font-size: .88rem; color: var(--accent-text); }
.pipeline span { display: block; font-size: .8rem; color: var(--text-2); line-height: 1.6; margin-top: 4px; }
@media (max-width: 1000px) {
  .pipeline { grid-template-columns: 1fr; }
  .pipeline li { border-right: 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 11em 1fr; gap: 10px; align-items: baseline; }
  .pipeline li:last-child { border-bottom: 0; }
  .pipeline span { margin-top: 0; }
}
@media (max-width: 480px) { .pipeline li { grid-template-columns: 1fr; gap: 2px; } }

/* Capabilities */
.capabilities { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; }
.capabilities li { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px 12px 40px; position: relative; }
.capabilities li::before { content: ""; position: absolute; left: 16px; top: 22px; width: 10px; height: 2px; background: var(--accent); }
@media (max-width: 720px) { .capabilities { grid-template-columns: 1fr; } }
.closing { margin-top: 1.6em; font-weight: 700; font-size: 1.05rem; border-left: 3px solid var(--accent); padding-left: .9em; }

.counts { color: var(--text-2); font-size: .9rem; margin-top: 16px; }
.limits { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; max-width: 880px; }
.limits li { color: var(--text-2); padding: 10px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; display: grid; grid-template-columns: 9.5em 1fr; gap: 0 12px; }
.limits b { color: var(--text); }
@media (max-width: 560px) { .limits li { grid-template-columns: 1fr; } }

/* Summary (three points right after the hero) */
.summary { padding: 0 0 clamp(36px, 5vw, 56px); }
.summary-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.summary-grid li { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--accent); border-radius: var(--radius); padding: 16px 18px 14px; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.summary-k { font-size: .78rem; font-weight: 700; color: var(--accent-text); letter-spacing: .08em; }
.summary-grid p { margin: .35em 0 .8em; color: var(--text-2); font-size: .95rem; }
.summary-grid b { color: var(--text); }
.summary-grid a { margin-top: auto; font-size: .88rem; font-weight: 700; text-decoration: none; }
.summary-grid a::after { content: " →"; }
@media (max-width: 860px) { .summary-grid { grid-template-columns: 1fr; } }

/* About */
#about .eyebrow { margin-bottom: .2em; }
.about-name { margin: .7em 0 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.about-initials { font-size: 1.35rem; letter-spacing: .04em; }
.about-title { color: var(--text-2); font-weight: 700; font-size: .98rem; }
.about-bio { max-width: 46em; margin-top: .8em; }
.about-bio p { margin: .5em 0; }
.note { font-size: .85rem; color: var(--text-3); max-width: 52em; margin: -1em 0 1.6em; }
.services-h { font-size: .95rem; margin: 1.6em 0 0; color: var(--text-2); }
.code-note { margin: 1.4em 0 0; font-size: .88rem; color: var(--text-3); }

/* ADS section: sub-sections, AI / Agent cards, model details */
.sub-h { font-size: 1.15rem; margin: 2.2em 0 .5em; }
.sub-lead { color: var(--text-2); max-width: 52em; margin: 0 0 1.1em; font-size: .95rem; }
.card h4 { font-size: 1rem; margin: 0 0 .35em; }
.card .plain li { margin: .2em 0; }
.tools .card h4 { color: var(--accent-text); }
.muted { color: var(--text-3); }
.models { margin-top: 12px; font-size: .85rem; color: var(--text-2); }
.models summary { cursor: pointer; color: var(--text-3); }
.models ul { list-style: none; padding: 0; margin: 8px 0 4px; }
.models li { padding: 3px 0; }
.models li b { display: inline-block; min-width: 8.5em; color: var(--text); font-weight: 700; }
.models p { margin: 4px 0 0; color: var(--text-3); }
.ads-note { margin: 1.4em 0 0; }
.inline-link { font-weight: 700; white-space: nowrap; }
.inline-link::after { content: " →"; }
.kv li.kv-period { flex-wrap: wrap; }
.kv li.kv-period small { flex-basis: 100%; color: var(--text-3); font-size: .8rem; line-height: 1.55; }

/* Contact / CTA */
.contact { background: var(--accent-soft); border-top: 1px solid var(--line); }
.contact-inner { max-width: 820px; text-align: center; }
.contact-lead { color: var(--text-2); margin: .9em auto 0; max-width: 40em; }
.services { list-style: none; padding: 0; margin: 1.4em 0 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.services li { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: .9rem; }
.availability { margin: 1.1em 0 0; color: var(--text-2); }
.availability b { color: var(--text); margin-right: .8em; }
.contact-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 1.6em 0 0; }
.btn { display: inline-block; padding: 10px 20px; border-radius: 8px; border: 1px solid var(--accent); color: var(--accent-text); background: var(--surface); text-decoration: none; font-weight: 700; }
.btn:hover { background: var(--bg-band); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-text); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.footer { padding: 28px 0 40px; color: var(--text-3); font-size: .85rem; border-top: 1px solid var(--line); }
.footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer p { margin: 0; }