/* Hysion site — design tokens + shared UI. Motion tokens from transitions.dev. */

:root {
  --color-ink: #1a1d2b;
  --color-muted: #666666;
  --color-subtle: #808080;
  --color-line: #eeeeee;
  --color-paper: #ffffff;
  --color-wash: #f9f9f9;
  --color-navy: #0d1c53;
  --color-accent: #2496e6;
  --color-accent-strong: #1f98f6;
  --color-link: #00a4ff;
  --color-hero: #ffffff;
  --color-footer: #010a15;
  --color-footer-bar: #000000;
  --color-header: rgba(8, 14, 32, 0.92);
  --shadow-card: 0 3px 45px rgba(0, 0, 0, 0.16);
  --shadow-lift: 0 12px 36px rgba(13, 28, 83, 0.12);
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-pill: 30px;
  --container: 1200px;
  --header-h: 72px;
  --font-sans: "Hysion Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;

  --duration-stagger: 40ms;
  --duration-micro: 80ms;
  --duration-quick: 150ms;
  --duration-fast: 250ms;
  --duration-medium: 350ms;
  --duration-slow: 400ms;
  --duration-very-slow: 500ms;
  --ease-smooth-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: ease-in-out;
  --ease-out: ease-out;
  --ease-linear: linear;
  --distance-micro: 4px;
  --distance-small: 6px;
  --distance-base: 8px;
  --distance-medium: 12px;
  --blur-small: 2px;
  --blur-medium: 3px;
  --scale-medium: 0.97;
  --scale-small: 0.98;
  --scale-tiny: 0.99;

  --dropdown-open-dur: 250ms;
  --dropdown-close-dur: 150ms;
  --dropdown-pre-scale: 0.97;
  --dropdown-closing-scale: 0.99;
  --dropdown-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --panel-open-dur: 400ms;
  --panel-close-dur: 350ms;
  --panel-translate-y: 100px;
  --panel-blur: 2px;
  --panel-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shake-distance: 6px;
  --shake-overshoot: 4px;
  --shake-dur-a: 80ms;
  --shake-dur-b: 60ms;
  --shake-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --revert-hold: 3000ms;
  --revert-dur: 280ms;
  --tabs-dur: 250ms;
  --tabs-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tabs-text-muted: rgba(15, 15, 15, 0.8);
  --tabs-text-active: #0f0f0f;
  --tabs-bar-bg: #f1f1f1;
  --tabs-pill-bg: #ffffff;
  --tt-in-dur: 150ms;
  --tt-out-dur: 50ms;
  --tt-scale: 0.98;
  --tt-delay: 80ms;
  --tt-in-ease: ease-out;
  --tt-out-ease: ease-out;
  --tt-bg: #ffffff;
  --tt-fg: #2f2f2f;
  --stagger-dur: 500ms;
  --stagger-distance: 12px;
  --stagger-stagger: 40ms;
  --stagger-blur: 3px;
  --stagger-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --acc-expand: 250ms;
  --acc-collapse: 250ms;
  --acc-chevron: 250ms;
  --acc-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@font-face {
  font-family: "Hysion Sans";
  src: url("/assets/fonts/思源黑体CN-Light.otf") format("opentype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Hysion Sans";
  src: url("/assets/fonts/思源黑体CN-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-paper);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
p { margin: 0; }

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 10000;
  padding: 8px 14px;
  background: var(--color-navy);
  color: #fff;
  border-radius: var(--radius-sm);
}
.skip-link:focus { top: 12px; }

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1200;
  height: var(--header-h);
  background: var(--color-header);
  backdrop-filter: saturate(1.2) blur(12px);
  -webkit-backdrop-filter: saturate(1.2) blur(12px);
  transition: background var(--duration-fast) var(--ease-smooth-out);
}
.site-header.is-home {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent);
  backdrop-filter: none;
}
.site-header.is-home.is-scrolled {
  background: var(--color-header);
  backdrop-filter: saturate(1.2) blur(12px);
  -webkit-backdrop-filter: saturate(1.2) blur(12px);
}
.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}
.site-logo img { height: 44px; width: auto; }
.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  color: #fff;
  padding: 0 1.15rem;
  height: 4rem;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast) var(--ease-smooth-out),
              border-color var(--duration-fast) var(--ease-smooth-out);
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--color-accent); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--color-accent); }

.header-search { position: relative; z-index: 2; }
.search-trigger {
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  border-radius: 50%;
}
.search-trigger:hover,
.search-trigger[aria-expanded="true"] { background: rgba(255, 255, 255, 0.08); }
.search-trigger svg { width: 20px; height: 20px; fill: currentColor; }

.t-tt-wrap { position: relative; display: inline-block; }
.t-tt {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translate(-50%, 0) scale(var(--tt-scale));
  transform-origin: 50% 100%;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--tt-bg);
  color: var(--tt-fg);
  white-space: nowrap;
  font-size: 12px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.05), 0 4px 42px rgba(0, 0, 0, 0.06);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--tt-out-dur) var(--tt-out-ease),
              transform var(--tt-out-dur) var(--tt-out-ease);
}
.t-tt-wrap:hover .t-tt,
.t-tt-trigger:focus-visible + .t-tt {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
  transition-duration: var(--tt-in-dur);
  transition-timing-function: var(--tt-in-ease);
  transition-delay: var(--tt-delay);
}

.t-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 20;
  width: min(320px, calc(100vw - 32px));
  padding: 12px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transform-origin: top right;
  transform: scale(var(--dropdown-pre-scale));
  opacity: 0;
  pointer-events: none;
  transition: transform var(--dropdown-open-dur) var(--dropdown-ease),
              opacity var(--dropdown-open-dur) var(--dropdown-ease);
  will-change: transform, opacity;
}
.t-dropdown[data-origin="top-right"] { transform-origin: top right; }
.t-dropdown.is-open {
  transform: scale(1);
  opacity: 1;
  pointer-events: auto;
}
.t-dropdown.is-closing {
  transform: scale(var(--dropdown-closing-scale));
  opacity: 0;
  pointer-events: none;
  transition: transform var(--dropdown-close-dur) var(--dropdown-ease),
              opacity var(--dropdown-close-dur) var(--dropdown-ease);
}
.search-box {
  display: flex;
  border: 1px solid var(--color-accent);
  border-radius: 22px;
  overflow: hidden;
  background: #fff;
}
.search-box input {
  flex: 1;
  border: 0;
  padding: 8px 14px;
  outline: none;
  min-width: 0;
}
.search-box button {
  border: 0;
  background: transparent;
  color: var(--color-accent);
  width: 40px;
  cursor: pointer;
}
.search-results { margin-top: 10px; max-height: 240px; overflow: auto; }
.search-results a {
  display: block;
  padding: 8px 10px;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
}
.search-results a:hover,
.search-results a:focus-visible { background: var(--color-wash); color: var(--color-navy); }
.search-results .meta { color: var(--color-subtle); font-size: 12px; }
.search-empty { color: var(--color-muted); padding: 8px 10px; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: transform var(--duration-fast) var(--ease-smooth-out),
              opacity var(--duration-fast) var(--ease-smooth-out);
}
.nav-toggle span { margin: 0 auto; position: relative; }
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.nav-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(80%, 320px);
  background: #fff;
  z-index: 1100;
  transform: translateX(100%);
  opacity: 0;
  filter: blur(var(--panel-blur));
  pointer-events: none;
  transition: transform var(--panel-close-dur) var(--panel-ease),
              opacity var(--panel-close-dur) var(--panel-ease),
              filter var(--panel-close-dur) var(--panel-ease);
  padding: 24px 20px;
  overflow: auto;
}
.nav-drawer[data-open="true"] {
  transform: translateX(0);
  opacity: 1;
  filter: blur(0);
  pointer-events: auto;
  transition: transform var(--panel-open-dur) var(--panel-ease),
              opacity var(--panel-open-dur) var(--panel-ease),
              filter var(--panel-open-dur) var(--panel-ease);
}
.nav-drawer a {
  display: block;
  padding: 14px 8px;
  color: #303133;
  border-bottom: 1px solid var(--color-line);
}
.nav-drawer a:focus-visible {
  outline: none;
  background: var(--color-wash);
}
.nav-drawer a[aria-current="page"] { color: var(--color-navy); font-weight: 600; }
#form, #main, :target {
  scroll-margin-top: calc(var(--header-h) + 12px);
}
.panel h3 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--color-navy);
}
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-medium) var(--ease-smooth-out);
}
.nav-overlay.is-open { opacity: 1; pointer-events: auto; }

/* Hero */
.hero {
  position: relative;
  min-height: 645px;
  display: grid;
  place-items: center;
  color: var(--color-hero);
  overflow: hidden;
  background: #050814;
}
.hero video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.28);
}
.hero__copy {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: min(960px, 100%);
  padding: 120px max(16px, 4vw) 80px;
}
.hero h1 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(26px, 4.2vw, 60px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-wrap: balance;
}
.hero .lede {
  margin-top: 12px;
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 400;
}
.hero .sub { margin-top: 16px; font-size: 18px; opacity: 0.95; }

.t-stagger-line {
  display: block;
  opacity: 0;
  transform: translateY(var(--stagger-distance));
  filter: blur(var(--stagger-blur));
  transition: opacity var(--stagger-dur) var(--stagger-ease),
              transform var(--stagger-dur) var(--stagger-ease),
              filter var(--stagger-dur) var(--stagger-ease);
  will-change: transform, opacity, filter;
}
.t-stagger-line--2 { transition-delay: var(--stagger-stagger); }
.t-stagger-line--3 { transition-delay: calc(var(--stagger-stagger) * 2); }
.t-stagger.is-shown .t-stagger-line {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.page-hero {
  position: relative;
  min-height: 240px;
  display: grid;
  place-items: center;
  color: #fff;
  background: #0c1024 center / cover no-repeat;
  text-align: center;
  padding: calc(var(--header-h) + 48px) 20px 48px;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.31);
}
.page-hero > * { position: relative; z-index: 1; }
.page-hero h1 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 36px;
  font-weight: 300;
  letter-spacing: 2px;
}
.page-hero .rule {
  width: 48px;
  height: 2px;
  margin: 12px auto;
  background: #fff;
}
.crumbs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  opacity: 0.9;
}
.crumbs a:hover { color: var(--color-accent); }

/* Sections */
.section { padding: 64px 0; }
.section--wash { background: var(--color-wash); }
.section--dark {
  background: #0a1638 url("/assets/images/101117_17539460725992.png") center / cover no-repeat;
  color: #fff;
}
.section--soft {
  background: #fff url("/assets/images/42608_16099847808683.jpg") center / cover no-repeat;
}
.section-title {
  font-family: var(--font-sans);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 300;
  letter-spacing: 2px;
  margin: 0 0 40px;
  color: var(--color-ink);
}
.section--dark .section-title { color: #fff; }
.section-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 36px;
}
.section-head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 1px;
  text-align: center;
}
.section-head img { height: 18px; width: auto; opacity: 0.85; }

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 800ms var(--ease-smooth-out),
              transform 800ms var(--ease-smooth-out);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
.industry-grid > .reveal:nth-child(2),
.product-grid > .reveal:nth-child(2),
.culture-grid > .reveal:nth-child(2),
.office-grid > .reveal:nth-child(2),
.case-grid > .reveal:nth-child(3n + 2) { transition-delay: 80ms; }
.industry-grid > .reveal:nth-child(3),
.product-grid > .reveal:nth-child(3),
.culture-grid > .reveal:nth-child(3),
.office-grid > .reveal:nth-child(3),
.case-grid > .reveal:nth-child(3n + 3) { transition-delay: 160ms; }
.office-grid > .reveal:nth-child(4) { transition-delay: 240ms; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 40px;
  border-radius: var(--radius-pill);
  border: 1px solid currentColor;
  background: transparent;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-smooth-out),
              background var(--duration-fast) var(--ease-smooth-out),
              border-color var(--duration-fast) var(--ease-smooth-out),
              transform var(--duration-fast) var(--ease-smooth-out);
}
.btn:hover { transform: translateY(-1px); }
.btn--navy { color: var(--color-navy); border-color: var(--color-navy); }
.btn--navy:hover { color: #fff; background: var(--color-navy); }
.btn--ghost { color: #fff; border-color: rgba(255, 255, 255, 0.17); }
.btn--ghost:hover { background: var(--color-navy); }
.btn--text {
  color: var(--color-link);
  border: 0;
  border-bottom: 1px solid currentColor;
  border-radius: 0;
  padding: 0 0 5px;
  min-height: 0;
}
.btn--text:hover { color: #00d296; }

/* Home: core business */
.core {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}
.core-nav { list-style: none; margin: 12px 0 0; padding: 0; }
.core-nav li { margin: 0; }
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.core-nav button {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--color-subtle);
  font-size: 20px;
  line-height: 1.7;
  padding: 18px 0 18px 70px;
  cursor: pointer;
  position: relative;
  transition: color var(--duration-fast) var(--ease-smooth-out);
}
.core-nav button::before {
  content: attr(data-n);
  position: absolute;
  left: 0;
  top: 18px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-navy);
  opacity: 0.45;
}
.core-nav button[aria-selected="true"],
.core-nav button:hover { color: var(--color-navy); }
.core-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 440px);
  column-gap: 40px;
  align-items: center;
}
.core-panel h3 {
  margin: 0 0 16px;
  font-size: 24px;
  color: var(--color-navy);
}
.core-panel p { color: var(--color-subtle); max-width: 36em; }
.core-panel p + p { margin-top: 12px; }
.core-panel img { grid-column: 2; grid-row: 1 / 4; width: 100%; object-fit: contain; max-height: 280px; }
.core-panel[hidden] { display: none; }
.core-panel.is-entering {
  animation: core-in var(--duration-slow) var(--ease-smooth-out);
}
@keyframes core-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.industry-grid,
.product-grid,
.case-grid,
.culture-grid,
.office-grid {
  display: grid;
  gap: 24px;
}
.industry-grid { grid-template-columns: repeat(3, 1fr); }
.product-grid { grid-template-columns: repeat(3, 1fr); }
.case-grid { grid-template-columns: repeat(3, 1fr); }
.culture-grid { grid-template-columns: repeat(3, 1fr); }
.office-grid { grid-template-columns: repeat(4, 1fr); }

.card {
  background: rgba(14, 46, 152, 0.1);
  border: 2px solid rgba(238, 238, 238, 0.08);
  border-radius: var(--radius-md);
  padding: 30px 30px 40px;
  transition: transform var(--duration-fast) var(--ease-smooth-out),
              box-shadow var(--duration-fast) var(--ease-smooth-out),
              background var(--duration-fast) var(--ease-smooth-out);
}
.card:hover {
  box-shadow: var(--shadow-card);
  background: rgba(255, 255, 255, 0.08);
}
.card.is-in:hover,
.card:not(.reveal):hover { transform: translateY(-6px); }
.card h3 { margin: 0 0 12px; font-size: 22px; letter-spacing: 1px; }
.card p { color: rgba(255, 255, 255, 0.67); line-height: 1.7; }
.card .media {
  margin-top: 24px;
  overflow: hidden;
  border-radius: var(--radius-md);
}
.card .media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform var(--duration-medium) var(--ease-smooth-out);
}
.card:hover .media img { transform: scale(1.04); }

.series-card {
  text-align: center;
  padding: 28px 16px 32px;
  background: #fff;
  transition: transform var(--duration-fast) var(--ease-smooth-out),
              box-shadow var(--duration-fast) var(--ease-smooth-out);
}
.series-card:hover { box-shadow: var(--shadow-lift); }
.series-card.is-in:hover,
.series-card:not(.reveal):hover { transform: translateY(-8px); }
.series-card img { margin: 0 auto 16px; max-height: 140px; object-fit: contain; }
.series-card h3 { margin: 0 0 10px; font-size: 22px; }
.series-card p { color: #666; margin: 0 0 24px; }

.partners {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.partners a,
.partners span {
  display: grid;
  place-items: center;
  background: #fff;
  padding: 8px;
  min-height: 88px;
  transition: transform var(--duration-fast) var(--ease-smooth-out);
}
.partners img { max-height: 72px; object-fit: contain; }
.partners a:hover,
.partners span:hover { transform: translateY(-8px); }

/* About / copy */
.prose {
  max-width: 880px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.9;
  color: #444;
}
.prose p + p { margin-top: 1em; }
.culture-card { text-align: center; padding: 24px 16px; }
.culture-card img { margin: 0 auto 16px; height: 72px; object-fit: contain; }
.culture-card h3 { margin: 0; font-size: 22px; }
.culture-card .en { color: var(--color-subtle); margin: 4px 0 16px; }
.culture-card p { color: #555; }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.cert-grid button {
  border: 0;
  padding: 0;
  background: #fff;
  cursor: zoom-in;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}
.cert-grid img { width: 100%; height: 100%; object-fit: cover; }

/* Products */
.layout-split {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}
.side-nav h2 {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 5px solid #999;
  font-size: 18px;
  font-weight: 600;
}
.side-nav a {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
  color: #555;
  transition: color var(--duration-fast) var(--ease-smooth-out),
              padding-left var(--duration-fast) var(--ease-smooth-out);
}
.side-nav a:hover,
.side-nav a[aria-current="page"] {
  color: var(--color-accent);
  padding-left: 8px;
}

.product-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-line);
}
.product-row img { width: 100%; object-fit: contain; }
.product-row h3 { margin: 0 0 8px; font-size: 22px; }
.product-row .series { color: var(--color-subtle); margin-bottom: 10px; }
.product-row .tags { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; margin: 12px 0 20px; color: #555; }

.article { max-width: 920px; margin: 0 auto; }
.article img { margin: 0 auto 24px; }
.article h1 { font-size: 28px; margin: 0 0 8px; }
.article .meta { color: var(--color-subtle); margin-bottom: 24px; }
.article p { font-size: 16px; line-height: 1.85; color: #444; margin-bottom: 16px; }
.pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
}
.pager a { color: var(--color-navy); }
.pager a:hover { color: var(--color-accent); }

.spec {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 8px;
  font-size: 14px;
}
.spec th, .spec td {
  border: 1px solid #e5e5e5;
  padding: 10px 12px;
  text-align: left;
}
.spec th { background: var(--color-wash); color: var(--color-navy); font-weight: 600; }

.t-acc { border-bottom: 1px solid var(--color-line); }
.t-acc-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0;
  border: 0;
  background: none;
  cursor: pointer;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
}
.t-acc-chevron {
  width: 16px;
  height: 16px;
  transition: transform var(--acc-chevron) var(--acc-ease);
}
.t-acc-chevron svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.6; vector-effect: non-scaling-stroke; }
.t-acc[data-open="true"] .t-acc-chevron { transform: scaleY(-1); }
.t-acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--acc-collapse) var(--acc-ease);
}
.t-acc[data-open="true"] .t-acc-panel {
  grid-template-rows: 1fr;
  transition: grid-template-rows var(--acc-expand) var(--acc-ease);
}
.t-acc-panel-inner {
  overflow: hidden;
  opacity: 0;
  filter: blur(2px);
  transition: opacity var(--acc-collapse) var(--acc-ease),
              filter var(--acc-collapse) var(--acc-ease);
}
.t-acc[data-open="true"] .t-acc-panel-inner {
  opacity: 1;
  filter: blur(0);
  transition: opacity var(--acc-expand) var(--acc-ease),
              filter var(--acc-expand) var(--acc-ease);
}

.case-card {
  background: #fff;
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease-smooth-out),
              box-shadow var(--duration-fast) var(--ease-smooth-out);
}
.case-card:hover { box-shadow: var(--shadow-lift); }
.case-card.is-in:hover,
.case-card:not(.reveal):hover { transform: translateY(-6px); }
.case-card .thumb { position: relative; overflow: hidden; }
.case-card .thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform var(--duration-medium) var(--ease-smooth-out);
}
.case-card:hover .thumb img { transform: scale(1.04); }
.case-card .date {
  position: absolute;
  right: 12px;
  bottom: 12px;
  background: var(--color-navy);
  color: #fff;
  padding: 8px 10px;
  text-align: center;
  line-height: 1.2;
  font-size: 13px;
}
.case-card .body { padding: 18px 8px 24px; }
.case-card .brand { color: var(--color-subtle); font-size: 13px; }
.case-card h3 { margin: 6px 0 10px; font-size: 18px; line-height: 1.4; color: var(--color-navy); }
.case-card p {
  color: #666;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 5.6em;
}
.case-card .btn { margin-top: 16px; }

.benefit { margin: 28px 0 0; }
.benefit h3 { margin: 0 0 8px; font-size: 18px; color: var(--color-navy); }
.benefit p, .benefit li { color: #555; line-height: 1.8; }
.benefit ul { padding-left: 1.2em; }

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.split--flip { grid-template-columns: 0.9fr 1.1fr; }
.split img { width: 100%; }
.dots { list-style: none; margin: 0; padding: 0; }
.dots li {
  position: relative;
  padding: 8px 0 8px 18px;
  color: #555;
  line-height: 1.7;
}
.dots li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-strong);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}
.panel {
  background: #fff;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
  padding: 28px 24px;
}
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li { display: flex; gap: 12px; align-items: center; padding: 10px 0; }
.contact-list img { width: 22px; height: 22px; object-fit: contain; }
.office-card {
  background: #fff;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease-smooth-out),
              box-shadow var(--duration-fast) var(--ease-smooth-out),
              border-color var(--duration-fast) var(--ease-smooth-out);
  border: 2px solid transparent;
}
.office-card:hover {
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
  border-color: var(--color-accent);
}
.office-card.is-in:hover,
.office-card:not(.reveal):hover { transform: translateY(-6px); }
.office-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.office-card .body { padding: 14px 14px 18px; }
.office-card h3 { margin: 0 0 6px; font-size: 16px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field--full { grid-column: 1 / -1; }
.field label { color: #333; }
.t-input, .field select, .field textarea {
  border: 1px solid #dcdfe6;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: #fff;
  transition: border-color 150ms ease-out;
  will-change: transform;
}
.t-input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--color-accent) 40%, transparent);
  border-color: var(--color-accent);
}
.t-input.is-error { border-color: #d64545; transition: border-color var(--revert-dur) ease-out; }
.t-error-msg {
  opacity: 0;
  visibility: hidden;
  color: #d64545;
  font-size: 12px;
  transition: opacity var(--revert-dur) ease-out, visibility 0s linear var(--revert-dur);
}
.t-input-wrap.is-error .t-error-msg {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--revert-dur) ease-out, visibility 0s linear 0s;
}
.t-input.is-shaking {
  animation: t-input-shake calc(var(--shake-dur-a) * 2 + var(--shake-dur-b) * 2) linear;
}
@keyframes t-input-shake {
  0% { transform: translateX(0); animation-timing-function: var(--shake-ease); }
  28.57% { transform: translateX(var(--shake-distance)); animation-timing-function: var(--shake-ease); }
  57.14% { transform: translateX(calc(var(--shake-distance) * -1)); animation-timing-function: var(--shake-ease); }
  78.57% { transform: translateX(var(--shake-overshoot)); animation-timing-function: var(--shake-ease); }
  100% { transform: translateX(0); }
}
.form-note {
  display: none;
  margin-top: 12px;
  color: var(--color-navy);
}
.form-note.is-shown { display: block; }

/* Footer */
.site-footer { background: var(--color-footer); color: #808080; padding: 56px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.8fr 1.4fr;
  gap: 32px;
  padding-bottom: 36px;
}
.site-footer h3 { color: #fff; font-size: 16px; margin: 0 0 14px; font-weight: 400; }
.site-footer a { color: #808080; }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { padding: 5px 0; font-size: 14px; }
.site-footer .logo img { height: 48px; }
.site-footer .bar {
  background: var(--color-footer-bar);
  color: rgba(255, 255, 255, 0.57);
  text-align: center;
  padding: 16px 12px 22px;
  font-size: 13px;
}
.site-footer .bar a { color: inherit; }

.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 0;
  background: var(--color-navy);
  color: #fff;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--duration-fast) var(--ease-smooth-out),
              transform var(--duration-fast) var(--ease-smooth-out);
  z-index: 50;
}
.to-top.is-shown { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--color-accent); }

.lightbox {
  border: 0;
  padding: 0;
  background: transparent;
  max-width: min(90vw, 720px);
}
.lightbox::backdrop { background: rgba(0, 0, 0, 0.72); }
.lightbox img { width: 100%; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .t-dropdown,
  .t-tt,
  .t-stagger-line,
  .t-acc-panel,
  .t-acc-panel-inner,
  .t-acc-chevron,
  .nav-drawer,
  .nav-overlay,
  .reveal,
  .card,
  .series-card,
  .case-card,
  .office-card,
  .partners a,
  .btn,
  .t-input,
  .core-panel { transition: none !important; animation: none !important; }
  .t-input { transform: none !important; }
  .reveal,
  .t-stagger-line {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
}

@media (max-width: 1024px) {
  .core, .layout-split, .product-row, .split, .split--flip, .contact-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .core-panel { grid-template-columns: 1fr; }
  .core-panel img { grid-column: auto; grid-row: auto; }
  .industry-grid, .product-grid, .case-grid, .culture-grid, .advantage-grid { grid-template-columns: 1fr 1fr; }
  .office-grid, .partners, .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .site-nav { display: none; }
  .header-search { margin-left: auto; }
  .nav-toggle { display: grid; place-items: center; }
}

@media (max-width: 720px) {
  .industry-grid, .product-grid, .case-grid, .culture-grid, .office-grid, .partners, .cert-grid, .advantage-grid {
    grid-template-columns: 1fr;
  }
  .hero { min-height: 520px; }
  .hero h1 { font-size: clamp(22px, 8vw, 32px); letter-spacing: 0; }
  .hero .lede { font-size: 18px; }
  .hero .sub { font-size: 14px; }
  .section { padding: 48px 0; }
  .container { width: min(100% - 28px, var(--container)); }
}