/* =========================================================
   赢国平台 · 全站共享样式  /assets/site.css
   分屏 · 编号轴 · 墨绿/铜金 · 8° 斜切 · 计时牌式数字
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
[id] { scroll-margin-top: 7.5rem; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #0E2A22;
  --ink-deep: #071A15;
  --copper: #C08A3E;
  --copper-hi: #E8B96A;
  --vermilion: #E23B2E;
  --blue: #2F6BFF;
  --mint: #14C6A8;
  --canvas: #F4F2EC;
  --paper: #E2DED4;
  --graphite: #1C1F1D;
  --muted: #6B7370;
  --shell: 1180px;
  --r-lg: 28px;
  --r-md: 18px;
  --r-sm: 12px;
  --line-soft: rgba(28, 31, 29, 0.12);
  --line-ink: rgba(244, 242, 236, 0.16);
  --sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Noto Sans Mono CJK SC", monospace;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow-soft: 0 20px 44px -28px rgba(7, 26, 21, 0.42);
}

/* ---------- 3. Base typography ---------- */
body {
  background: var(--canvas);
  color: var(--graphite);
  font-family: var(--sans);
  font-size: clamp(16px, 0.5vw + 14.8px, 18px);
  line-height: 1.85;
  letter-spacing: 0.004em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-weight: 900; line-height: 1.18; letter-spacing: -0.02em; color: var(--ink); }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.8rem); }
h2 { font-size: clamp(1.55rem, 2.7vw, 2.35rem); }
h3 { font-size: clamp(1.15rem, 1.5vw, 1.4rem); letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; letter-spacing: 0; }
::selection { background: var(--copper-hi); color: var(--ink-deep); }

/* ---------- 4. Utilities ---------- */
.shell { width: min(100% - 2.4rem, var(--shell)); margin-inline: auto; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; top: -4rem; left: 1rem; z-index: 200;
  padding: 0.7rem 1.2rem; border-radius: 999px;
  background: var(--copper); color: var(--ink-deep);
  font-weight: 700; font-size: 0.9rem;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 0.8rem; }

:focus-visible {
  outline: 3px solid var(--copper-hi);
  outline-offset: 3px;
  border-radius: 6px;
}
.section--ink :focus-visible,
.site-footer :focus-visible { outline-color: var(--copper-hi); }

/* ---------- 5. Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 90;
  background: var(--canvas);
  transition: box-shadow 0.24s var(--ease);
}
.site-header[data-condensed] { box-shadow: 0 14px 34px -26px rgba(7, 26, 21, 0.55); }

.header-strip {
  background: var(--ink-deep);
  color: rgba(244, 242, 236, 0.66);
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}
.header-strip__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: 0.48rem;
}
.header-strip__brand { color: rgba(244, 242, 236, 0.82); }
.header-strip__meta { display: flex; align-items: center; gap: 1.1rem; }
.header-strip__item { white-space: nowrap; }
.header-strip__item--hot { color: var(--copper-hi); font-weight: 700; }

.header-main { position: relative; background: var(--canvas); border-bottom: 1px solid var(--line-soft); }
.header-main__inner {
  display: flex; align-items: center; gap: clamp(0.8rem, 2.4vw, 2rem);
  padding-block: 0.85rem; flex-wrap: wrap;
  transition: padding 0.24s var(--ease);
}
.site-header[data-condensed] .header-main__inner { padding-block: 0.5rem; }

.brand { display: inline-flex; align-items: center; gap: 0.7rem; order: 1; flex: 0 0 auto; }
.brand__mark {
  width: 44px; height: 44px; flex: 0 0 auto;
  display: grid; place-items: center;
  border-radius: 14px;
  background: var(--ink); color: var(--copper-hi);
  font-size: 1.3rem; font-weight: 900; line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(232, 185, 106, 0.4);
  transition: transform 0.24s var(--ease);
}
.brand:hover .brand__mark { transform: translateY(-2px); }
.brand__type { display: grid; gap: 0.1rem; }
.brand__name { display: block; font-size: 1.1rem; font-weight: 900; color: var(--ink); letter-spacing: 0.01em; line-height: 1.2; }
.brand__tag { display: block; font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em; color: var(--muted); line-height: 1.4; }

.nav-toggle {
  display: none;
  order: 3;
  align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.95rem 0.5rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  background: var(--canvas);
  font-size: 0.86rem; font-weight: 700; color: var(--ink);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav-toggle:hover { background: var(--paper); }
.nav-toggle__bars {
  width: 18px; height: 2px; border-radius: 2px; background: var(--ink);
  position: relative;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px;
  border-radius: 2px; background: var(--ink);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.site-nav { order: 2; margin-inline-start: auto; }
.site-nav__list { display: flex; align-items: center; gap: clamp(0.15rem, 1.1vw, 0.6rem); }
.site-nav__item { display: flex; }
.site-nav__link {
  display: inline-block;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  font-size: 0.95rem; font-weight: 500; color: var(--graphite);
  white-space: nowrap;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.site-nav__link:hover { background: var(--paper); color: var(--ink); }
.site-nav__link[aria-current="page"] {
  color: var(--ink); font-weight: 800;
  background: rgba(192, 138, 62, 0.14);
  box-shadow: inset 0 -2px 0 var(--copper);
}
.site-nav__item--service { margin-inline: 0.25rem; }
.site-nav__link--service {
  background: var(--copper); color: var(--ink-deep); font-weight: 800;
  padding-inline: 1.15rem;
  box-shadow: 0 10px 22px -16px rgba(192, 138, 62, 0.9);
}
.site-nav__link--service:hover { background: var(--copper-hi); color: var(--ink-deep); }
.site-nav__link--service[aria-current="page"] { background: var(--copper-hi); color: var(--ink-deep); box-shadow: inset 0 0 0 2px var(--ink-deep); }

.header-cta { order: 4; margin-inline-start: clamp(0.4rem, 1.6vw, 1.2rem); }
.header-cta__link { padding: 0.58rem 1.15rem; font-size: 0.9rem; }

.header-progress {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 3px;
  background: rgba(14, 42, 34, 0.08);
  overflow: hidden;
}
.header-progress__bar {
  display: block; height: 100%; width: 100%;
  transform: scaleX(0); transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--copper) 0%, var(--copper-hi) 70%, var(--mint) 100%);
  transition: transform 0.12s linear;
}

/* ---------- 6. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--ink);
  color: rgba(244, 242, 236, 0.76);
  overflow: hidden;
}
.site-footer::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 5px;
  background: linear-gradient(90deg, var(--copper) 0%, var(--copper-hi) 42%, rgba(20, 198, 168, 0.9) 100%);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 2.15fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: clamp(2.6rem, 5vw, 4.2rem) 0 clamp(1.6rem, 3vw, 2.4rem);
}
.footer-brand__name { font-size: 1.35rem; font-weight: 900; color: var(--canvas); letter-spacing: 0.01em; }
.footer-brand__desc { margin-top: 0.8rem; max-width: 30ch; font-size: 0.95rem; line-height: 1.85; color: rgba(244, 242, 236, 0.7); }
.footer-brand__hours {
  margin-top: 1.1rem;
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em;
  color: var(--copper-hi);
}
.footer-cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1rem, 2.4vw, 2rem); }
.footer-col__title {
  margin-bottom: 0.9rem;
  font-family: var(--mono); font-size: 0.74rem; font-weight: 700;
  letter-spacing: 0.14em; color: var(--copper-hi);
}
.footer-col__list { display: grid; gap: 0.55rem; }
.footer-link {
  display: inline-block;
  font-size: 0.92rem; color: rgba(244, 242, 236, 0.76);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-link:hover { color: var(--canvas); border-bottom-color: var(--copper); }

.footer-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.2rem 1.6rem;
  padding: clamp(1.4rem, 2.6vw, 2rem) 0;
  border-top: 1px solid var(--line-ink);
}
.footer-contact__row { display: grid; align-content: start; gap: 0.35rem; justify-items: start; }
.footer-contact__row--wide { grid-column: 1 / -1; }
.footer-contact__label {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em;
  color: var(--copper-hi);
}
.footer-contact__value { font-size: 0.94rem; line-height: 1.7; color: rgba(244, 242, 236, 0.88); }

.copy-btn {
  margin-top: 0.5rem;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(232, 185, 106, 0.45);
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  color: var(--copper-hi);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.copy-btn:hover { background: rgba(232, 185, 106, 0.14); }
.copy-btn[data-copied] { background: var(--mint); border-color: var(--mint); color: #04211B; }

.footer-legal {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.7rem 1.4rem;
  padding: 1.1rem 0 2.2rem;
  border-top: 1px solid var(--line-ink);
  font-size: 0.82rem; color: rgba(244, 242, 236, 0.58);
}
.footer-legal__links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-legal__links .footer-link { font-size: 0.82rem; color: rgba(244, 242, 236, 0.66); }

.to-top {
  position: fixed; right: clamp(1rem, 2.6vw, 1.75rem); bottom: clamp(1rem, 2.6vw, 1.75rem); z-index: 95;
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.6rem 1.1rem 0.6rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(14, 42, 34, 0.18);
  background: var(--canvas); color: var(--ink);
  font-size: 0.85rem; font-weight: 700;
  box-shadow: var(--shadow-soft);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s var(--ease), background-color 0.18s var(--ease);
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--copper-hi); border-color: var(--copper-hi); }
.to-top__icon { font-size: 1rem; line-height: 1; color: var(--copper); }
.to-top:hover .to-top__icon { color: var(--ink-deep); }

/* ---------- 7. Buttons & capsules ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.72rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.94rem; font-weight: 700; letter-spacing: 0.01em;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--copper { background: var(--copper); border-color: var(--copper); color: var(--ink-deep); }
.btn--copper:hover { background: var(--copper-hi); border-color: var(--copper-hi); }
.btn--solid { background: var(--ink); border-color: var(--ink); color: var(--canvas); }
.btn--solid:hover { background: var(--ink-deep); border-color: var(--ink-deep); }
.btn--line { background: transparent; border-color: rgba(14, 42, 34, 0.28); color: var(--ink); }
.btn--line:hover { background: var(--ink); border-color: var(--ink); color: var(--canvas); }
.btn--block { width: 100%; }

.capsule {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.28rem 0.85rem;
  border-radius: 999px;
  background: var(--paper); color: var(--graphite);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em;
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.capsule--copper { background: rgba(192, 138, 62, 0.16); color: #7A5220; box-shadow: inset 0 0 0 1px rgba(192, 138, 62, 0.42); }
.capsule--mint { background: rgba(20, 198, 168, 0.16); color: #0B3A30; }
.capsule--red { background: rgba(226, 59, 46, 0.12); color: #8C2119; }
.capsule--blue { background: rgba(47, 107, 255, 0.12); color: #1B3E9E; }

/* ---------- 8. Layout blocks ---------- */
.section { padding-block: clamp(2.6rem, 6vw, 5rem); }
.section--tight { padding-block: clamp(1.6rem, 3.4vw, 2.6rem); }
.section--paper { background: var(--paper); }
.section--ink { background: var(--ink); color: rgba(244, 242, 236, 0.84); }
.section--ink h1, .section--ink h2, .section--ink h3, .section--ink h4 { color: var(--canvas); }
.section--ink .section-head__eyebrow { color: var(--copper-hi); }
.section--ink .section-head__lede { color: rgba(244, 242, 236, 0.72); }
.section--ink a { color: var(--copper-hi); }

.slant-band {
  position: relative;
  padding: clamp(3.4rem, 7vw, 6rem) clamp(1rem, 4vw, 3rem);
  clip-path: polygon(0 2.6rem, 100% 0, 100% calc(100% - 2.6rem), 0 100%);
}

.section-head { display: grid; gap: 0.9rem; max-width: 62ch; margin-bottom: clamp(1.6rem, 3.6vw, 2.8rem); }
.section-head__eyebrow {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.16em;
  color: var(--copper); font-weight: 700;
}
.section-head__title { max-width: 24ch; }
.section-head__lede { font-size: 1.02rem; line-height: 1.9; color: var(--muted); }

.stack > * + * { margin-top: 1.4rem; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}
.split--reverse { grid-template-columns: minmax(0, 62fr) minmax(0, 38fr); }
.split--even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.split__side { position: relative; }
.split__main { min-width: 0; }

.grid--2, .grid--3, .grid--4 { display: grid; gap: clamp(1rem, 2.4vw, 1.8rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

/* ---------- 9. Index axis ---------- */
.index-list {
  display: grid; gap: 0.15rem;
  border-left: 1px solid var(--line-soft);
}
.index-list__item {
  display: grid; grid-template-columns: 4.2rem minmax(0, 1fr); gap: 0.8rem;
  align-items: baseline;
  margin-left: -1px;
  padding: 0.55rem 0 0.55rem 1rem;
  border-left: 2px solid transparent;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.index-list__num { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.08em; color: var(--muted); }
.index-list__link { font-weight: 600; color: var(--graphite); }
.index-list__item.is-active { border-left-color: var(--copper); background: rgba(192, 138, 62, 0.09); }
.index-list__item.is-active .index-list__num { color: var(--copper); }
.index-list__item.is-active .index-list__link { color: var(--ink); font-weight: 800; }

/* ---------- 10. Numbered cards ---------- */
.num-card {
  position: relative;
  padding: clamp(1.3rem, 2.6vw, 2rem);
  border-radius: var(--r-lg);
  background: var(--canvas);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}
.num-card__num {
  display: block; margin-bottom: 0.7rem;
  font-family: var(--mono); font-size: 1.05rem; letter-spacing: 0.08em;
  color: var(--copper);
}
.num-card__title { margin-bottom: 0.4rem; font-size: 1.12rem; font-weight: 800; color: var(--ink); }
.num-card__text { font-size: 0.94rem; line-height: 1.8; color: var(--muted); }
.section--ink .num-card { background: rgba(244, 242, 236, 0.06); box-shadow: inset 0 0 0 1px rgba(232, 185, 106, 0.26); }
.section--ink .num-card__title { color: var(--canvas); }
.section--ink .num-card__text { color: rgba(244, 242, 236, 0.7); }

/* ---------- 11. Readouts & status track ---------- */
.readout { display: grid; gap: 0.25rem; }
.readout__value {
  font-family: var(--mono); font-weight: 700; letter-spacing: -0.01em;
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  color: var(--copper); line-height: 1.15;
}
.readout__label { font-size: 0.82rem; color: var(--muted); letter-spacing: 0.04em; }

.status-track { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.status-track__item {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.32rem 0.9rem 0.32rem 0.6rem;
  border-radius: 999px;
  background: var(--paper);
  font-size: 0.8rem; font-weight: 600; color: var(--muted);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.status-track__dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: rgba(107, 115, 112, 0.5); }
.status-track__item[data-state="active"] { color: var(--ink); box-shadow: inset 0 0 0 1px rgba(192, 138, 62, 0.5); }
.status-track__item[data-state="active"] .status-track__dot { background: var(--copper); }
.status-track__item[data-state="done"] { color: #0B3A30; background: rgba(20, 198, 168, 0.16); }
.status-track__item[data-state="done"] .status-track__dot { background: var(--mint); }
.status-track__item[data-state="urgent"] { color: #8C2119; background: rgba(226, 59, 46, 0.12); }
.status-track__item[data-state="urgent"] .status-track__dot { background: var(--vermilion); }

/* ---------- 12. Media frame ---------- */
.media-frame {
  position: relative; overflow: hidden;
  border-radius: var(--r-lg);
  aspect-ratio: 16 / 10;
  background: linear-gradient(140deg, var(--ink) 0%, var(--ink-deep) 58%, #123A2D 100%);
  box-shadow: var(--shadow-soft);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--sky { background: linear-gradient(160deg, #0E2A22 0%, #15493A 46%, #C08A3E 145%); }
.media-frame > img { width: 100%; height: 100%; object-fit: cover; }
.media-frame__caption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1rem 1.2rem;
  font-size: 0.82rem; color: rgba(244, 242, 236, 0.82);
  background: linear-gradient(to top, rgba(7, 26, 21, 0.86), rgba(7, 26, 21, 0));
}

/* ---------- 13. Page hero & breadcrumb ---------- */
.page-hero { padding-block: clamp(2.4rem, 5.5vw, 4.4rem) clamp(1.4rem, 3.4vw, 2.6rem); }
.page-hero__eyebrow {
  margin-bottom: 0.9rem;
  font-family: var(--mono); font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.16em; color: var(--copper);
}
.page-hero__title { max-width: 22ch; }
.page-hero__lede { margin-top: 1.1rem; max-width: 56ch; font-size: 1.02rem; line-height: 1.9; color: var(--muted); }
.page-hero__meta { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.6rem; }

.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.45rem;
  padding-block: 1.1rem 0;
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em;
  color: var(--muted);
}
.breadcrumb__link { color: var(--muted); }
.breadcrumb__link:hover { color: var(--ink); }
.breadcrumb__sep { color: rgba(107, 115, 112, 0.55); }
.breadcrumb__current { color: var(--graphite); }

/* ---------- 14. Prose ---------- */
.prose { max-width: 68ch; }
.prose > * + * { margin-top: 1.2em; }
.prose h2 { margin-top: 2.1em; }
.prose h3 { margin-top: 1.7em; }
.prose a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose a:hover { color: var(--ink); }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-top: 0.5em; }
.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }
.prose strong { font-weight: 800; color: var(--ink); }
.section--ink .prose a { color: var(--copper-hi); }

/* ---------- 15. Motion ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.06s; }
[data-reveal][data-delay="2"] { transition-delay: 0.12s; }
[data-reveal][data-delay="3"] { transition-delay: 0.18s; }
[data-reveal][data-delay="4"] { transition-delay: 0.24s; }
[data-reveal][data-delay="5"] { transition-delay: 0.3s; }
[data-reveal][data-delay="6"] { transition-delay: 0.36s; }

/* ---------- 16. Responsive ---------- */
@media (max-width: 1100px) {
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-brand__desc { max-width: 46ch; }
}

@media (max-width: 980px) {
  .header-strip__inner { flex-direction: column; align-items: center; gap: 0.15rem; text-align: center; }
  .header-strip__meta { gap: 0.8rem; }

  .nav-toggle { display: inline-flex; margin-inline-start: auto; }
  .header-cta { margin-inline-start: 0; order: 4; }
  .site-nav { order: 5; flex: 1 0 100%; margin-inline-start: 0; display: none; }
  .site-nav[data-open] { display: block; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0.1rem; padding-top: 0.4rem; }
  .site-nav__item { display: block; }
  .site-nav__link {
    display: block; padding: 0.8rem 1rem; border-radius: 14px;
    border-bottom: 1px solid var(--line-soft);
    font-size: 1rem;
  }
  .site-nav__item--service { margin: 0.5rem 0 0.8rem; }
  .site-nav__link--service { text-align: center; border-radius: 999px; border-bottom: 0; padding-block: 0.75rem; }

  .split, .split--reverse, .split--even { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 1.8rem, var(--shell)); }
  .footer-cols { grid-template-columns: minmax(0, 1fr); gap: 1.4rem; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .index-list__item { grid-template-columns: 3.4rem minmax(0, 1fr); gap: 0.6rem; padding-left: 0.8rem; }
  .page-hero__title, .section-head__title { max-width: none; }
  .to-top { padding: 0.55rem 0.9rem; }
  .to-top__text { display: none; }
}

@media (max-width: 560px) {
  .brand__tag { display: none; }
  .brand__mark { width: 38px; height: 38px; font-size: 1.15rem; border-radius: 12px; }
  .header-cta__link { padding: 0.5rem 0.9rem; font-size: 0.84rem; }
  .header-strip { font-size: 0.7rem; letter-spacing: 0.05em; }
}

/* ---------- 17. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  [data-reveal][data-delay] { transition-delay: 0s; }
  .header-progress__bar { transition: none; }
  .to-top { transition: opacity 0.001s linear, visibility 0.001s linear, background-color 0.18s linear; }
  .btn:hover, .brand:hover .brand__mark, .site-nav__link:hover { transform: none; }
}