/* ============================================
   LinuxTech - Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500&family=Noto+Sans+TC:wght@300;400;500;700&family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
  /* Brand palette — extracted from logo */
  --orange-500: #F28C1A;   /* Primary brand orange */
  --orange-400: #F5A03F;   /* Lighter pixel dots */
  --orange-300: #F8B864;   /* Faded dots */
  --orange-200: #FBD09E;   /* Soft accent */
  --orange-50:  #FFF4E6;

  /* Neutrals — warm-grey to match logo typography */
  --ink-900: #0B0A09;      /* near-black, slight warm */
  --ink-800: #161412;
  --ink-700: #221F1C;
  --ink-600: #3A352F;
  --ink-500: #6B635A;
  --ink-400: #9B9088;
  --ink-300: #C7BFB6;
  --ink-200: #E4DED7;
  --ink-100: #F2EEE9;      /* warm off-white */
  --ink-50:  #FAF8F5;

  /* Functional */
  --bg: var(--ink-50);
  --bg-alt: var(--ink-100);
  --bg-dark: var(--ink-900);
  --fg: var(--ink-900);
  --fg-muted: var(--ink-500);
  --accent: var(--orange-500);
  --border: rgba(11, 10, 9, 0.08);
  --border-strong: rgba(11, 10, 9, 0.16);

  /* Typography */
  --font-display: 'Instrument Serif', 'Noto Serif TC', Georgia, serif;
  --font-body: 'Geist', 'Noto Sans TC', 'Noto Sans SC', 'Noto Sans JP', -apple-system, sans-serif;
  --font-mono: 'Geist Mono', 'SF Mono', Menlo, monospace;

  /* Layout */
  --container: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* Language-specific font stacks */
html[lang="zh-TW"] { --font-body: 'Noto Sans TC', 'Geist', sans-serif; }
html[lang="zh-CN"] { --font-body: 'Noto Sans SC', 'Geist', sans-serif; }
html[lang="ja"]    { --font-body: 'Noto Sans JP', 'Geist', sans-serif; }

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  overflow-x: hidden;
  font-feature-settings: "ss01", "cv11";
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease-out); }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }

::selection { background: var(--orange-500); color: var(--ink-900); }

/* ============================================
   Typography Scale
   ============================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg);
}
html[lang="zh-TW"] h1, html[lang="zh-CN"] h1, html[lang="ja"] h1,
html[lang="zh-TW"] h2, html[lang="zh-CN"] h2, html[lang="ja"] h2,
html[lang="zh-TW"] h3, html[lang="zh-CN"] h3, html[lang="ja"] h3 {
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h1 { font-size: clamp(2.75rem, 7vw, 6rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.75rem); }
h3 { font-size: clamp(1.4rem, 2.4vw, 2rem); }

.italic-accent { font-style: italic; color: var(--accent); }

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section {
  padding: clamp(4rem, 9vw, 8rem) 0;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.1rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(250, 248, 245, 0.7);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  transition: all .3s var(--ease-out);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.nav-logo img { height: 48px; width: auto; display: block; }
.nav-logo span { display: none; } /* image logo speaks for itself */

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}
.nav-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  position: relative;
  padding: 0.25rem 0;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width .3s var(--ease-out);
}
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }
.nav-menu a.active { color: var(--accent); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* Language switcher */
.lang-switch {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}
.lang-current {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  transition: border-color .2s;
}
.lang-current:hover { border-color: var(--accent); }
.lang-current svg { width: 10px; transition: transform .2s; }
.lang-switch.open .lang-current svg { transform: rotate(180deg); }
.lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 160px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.4rem;
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all .2s var(--ease-out);
}
.lang-switch.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font: inherit;
  transition: background .15s;
}
.lang-menu button:hover { background: var(--bg-alt); }
.lang-menu button.active { color: var(--accent); }

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  background: var(--ink-900);
  color: var(--ink-50);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all .25s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(101%);
  transition: transform .3s var(--ease-out);
  z-index: -1;
}
.btn:hover { color: var(--ink-900); }
.btn:hover::after { transform: translateY(0); }
.btn span { position: relative; z-index: 1; }
.btn svg { width: 14px; position: relative; z-index: 1; transition: transform .25s; }
.btn:hover svg { transform: translateX(3px); }

.btn-outline {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border-strong);
}
.btn-outline:hover { color: var(--ink-900); border-color: var(--accent); }

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 5rem;
  overflow: hidden;
}

.hero > .container {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  width: 100%;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* Animated dot grid mimicking logo */
.dot-field {
  position: absolute;
  top: -10%;
  right: -20%;
  width: 65%;
  height: 120%;
  opacity: 0.6;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  margin: 1.5rem 0 2rem;
}
.hero h1 .line {
  display: block;
  overflow: hidden;
}
.hero h1 .line > span {
  display: inline-block;
  animation: rise 1s var(--ease-out) backwards;
}
.hero h1 .line:nth-child(1) > span { animation-delay: 0.1s; }
.hero h1 .line:nth-child(2) > span { animation-delay: 0.2s; }
.hero h1 .line:nth-child(3) > span { animation-delay: 0.3s; }

@keyframes rise {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.hero-lede {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.6;
  color: var(--ink-600);
  max-width: 560px;
  margin-bottom: 2.5rem;
  animation: fadeUp 1s var(--ease-out) 0.5s backwards;
}

@keyframes fadeUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeUp 1s var(--ease-out) 0.65s backwards;
}

.hero-meta { display: none; }

/* Hero aside — credibility column on the right */
.hero-aside {
  position: relative;
  z-index: 2;
  border-left: 1px solid var(--border-strong);
  padding-left: clamp(1.5rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  animation: fadeUp 1s var(--ease-out) 0.8s backwards;
}
.hero-aside-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.hero-aside-num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.5vw, 4.5rem);
  line-height: 0.95;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  font-feature-settings: "tnum" on, "lnum" on;
}
.hero-aside-num sup {
  font-size: 0.5em;
  color: var(--accent);
  font-style: italic;
  top: -0.4em;
  margin-left: 0.05em;
  font-feature-settings: normal;
}
.hero-aside-num .hero-aside-slash {
  color: var(--accent);
  font-style: italic;
  margin: 0 0.05em;
}
.hero-aside-lbl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-500);
  max-width: 14em;
  line-height: 1.5;
}

@media (max-width: 960px) {
  .hero > .container { grid-template-columns: 1fr; }
  .hero-aside {
    border-left: none;
    border-top: 1px solid var(--border-strong);
    padding-left: 0;
    padding-top: 2.5rem;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem 3rem;
  }
}
@media (max-width: 600px) {
  .hero-aside { gap: 1.5rem 2rem; }
  .hero-aside-row { flex: 1 1 calc(50% - 2rem); min-width: 130px; }
  .hero-aside-lbl { font-size: 0.62rem; }
}

/* ============================================
   Section: Stats / Marquee strip
   ============================================ */
.strip {
  background: var(--ink-900);
  color: var(--ink-100);
  padding: 1.5rem 0;
  overflow: hidden;
  border-top: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
}
.marquee {
  display: flex;
  gap: 4rem;
  white-space: nowrap;
  animation: scroll 35s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.marquee span { display: inline-flex; align-items: center; gap: 0.6rem; }
.marquee .dot { color: var(--accent); }

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============================================
   About / Intro Section
   ============================================ */
.about {
  background: var(--bg);
  position: relative;
  padding: 7rem 0;
}
.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 4rem;
  background: linear-gradient(180deg, transparent, var(--border-strong));
  transform: translateX(-50%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
}

.about-text h2 {
  margin: 1.25rem 0 2rem;
}
.about-text p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink-600);
  margin-bottom: 1.25rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem 2rem;
  position: sticky;
  top: 5rem;
}
.stat {
  background: transparent;
  padding: 0;
  border-top: 1px solid var(--border-strong);
  padding-top: 1.25rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 7vw, 5.5rem);
  line-height: 0.95;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  font-feature-settings: "lnum" on, "tnum" on;
}
.stat-num em {
  color: var(--accent);
  font-style: italic;
  font-size: 0.6em;
  vertical-align: top;
  letter-spacing: 0;
}
.stat-label {
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
  line-height: 1.5;
  max-width: 14em;
}

/* ============================================
   Services
   ============================================ */
.services {
  background: var(--ink-900);
  color: var(--ink-100);
  position: relative;
  overflow: hidden;
}
.services .eyebrow { color: var(--orange-400); }
.services .eyebrow::before { background: var(--orange-400); }
.services h2 { color: var(--ink-50); }

.services-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 4rem;
  flex-wrap: wrap;
  gap: 2rem;
}
.services-header h2 { max-width: 700px; }
.services-header p {
  max-width: 380px;
  color: var(--ink-300);
  line-height: 1.6;
}

.service-list {
  border-top: 1px solid rgba(255,255,255,0.1);
}
.service-item {
  display: grid;
  grid-template-columns: 80px 1fr 1.5fr auto;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  align-items: start;
  cursor: pointer;
  transition: padding .3s var(--ease-out);
  position: relative;
}
.service-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width .4s var(--ease-out);
}
.service-item:hover { padding-left: 1.5rem; }
.service-item:hover::before { width: 100%; }

.service-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange-400);
  letter-spacing: 0.1em;
  padding-top: 0.6rem;
}
.service-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  line-height: 1.1;
  color: var(--ink-50);
}
html[lang="zh-TW"] .service-title,
html[lang="zh-CN"] .service-title,
html[lang="ja"] .service-title {
  font-family: var(--font-body);
  font-weight: 500;
}
.service-desc {
  color: var(--ink-300);
  line-height: 1.6;
  padding-top: 0.5rem;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}
.service-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  color: var(--ink-300);
}
.service-arrow {
  align-self: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: grid;
  place-items: center;
  transition: all .3s var(--ease-out);
}
.service-item:hover .service-arrow {
  background: var(--accent);
  border-color: var(--accent);
  transform: rotate(-45deg);
}
.service-arrow svg { width: 14px; }

@media (max-width: 900px) {
  .service-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .service-arrow { display: none; }
}

/* ============================================
   Case Studies
   ============================================ */
.cases {
  background: var(--bg-alt);
  padding: 7rem 0;
  position: relative;
}
.cases::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
}

.cases-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 4rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
@media (max-width: 800px) {
  .case-grid { grid-template-columns: 1fr; }
}

.case-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform .4s var(--ease-out);
  border: 1px solid transparent;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}
.case-card:nth-child(even) {
  background: var(--ink-900);
  color: var(--ink-100);
}
.case-card:nth-child(even) .case-sector,
.case-card:nth-child(even) .case-meta { color: var(--orange-400); }
.case-card:nth-child(even) .case-summary { color: var(--ink-300); }

.case-visual {
  height: 220px;
  border-radius: var(--radius-md);
  margin-bottom: 1.75rem;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}
.case-card:nth-child(even) .case-visual { background: var(--ink-800); }

.case-sector {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.case-card h3 {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  margin-bottom: 0.85rem;
}
html[lang="zh-TW"] .case-card h3,
html[lang="zh-CN"] .case-card h3,
html[lang="ja"] .case-card h3 {
  font-family: var(--font-body);
  font-weight: 600;
}
.case-summary {
  color: var(--ink-600);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}
.case-meta {
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-500);
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}
.case-card:nth-child(even) .case-meta { border-top-color: rgba(255,255,255,0.1); }

/* ============================================
   CTA Band
   ============================================ */
.cta-band {
  background: var(--accent);
  color: var(--ink-900);
  padding: clamp(4rem, 8vw, 7rem) 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: 0;
  right: -10%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.25), transparent 70%);
  pointer-events: none;
}
.cta-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 800px) {
  .cta-content { grid-template-columns: 1fr; }
}
.cta-content h2 { font-size: clamp(2rem, 4vw, 3.25rem); }
.cta-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.cta-band .btn { background: var(--ink-900); color: var(--ink-50); }
.cta-band .btn::after { background: var(--ink-50); }
.cta-band .btn:hover { color: var(--ink-900); }

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--ink-900);
  color: var(--ink-300);
  padding: 6rem 0 2rem;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent) 50%, transparent);
  opacity: 0.4;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  margin-bottom: 4rem;
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-brand img {
  height: 56px;
  margin-bottom: 1.5rem;
  filter: brightness(1.1);
}
.footer-brand p {
  font-size: 0.92rem;
  line-height: 1.65;
  max-width: 320px;
  color: var(--ink-300);
}
.footer-brand-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--orange-300);
  margin-bottom: 0.75rem;
  display: block;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange-400);
  margin-bottom: 1.5rem;
  font-weight: 500;
}
.footer-col ul { list-style: none; }
.footer-col li {
  margin-bottom: 0.7rem;
  font-size: 0.9rem;
  line-height: 1.45;
}
.footer-col a {
  color: var(--ink-300);
  transition: color .15s, padding-left .25s var(--ease-out);
  position: relative;
  display: inline-block;
}
.footer-col a:hover {
  color: var(--orange-400);
  padding-left: 0.4rem;
}
.footer-col a:hover::before {
  content: '→';
  position: absolute;
  left: -0.6rem;
  color: var(--accent);
  opacity: 0.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ink-500);
  text-transform: uppercase;
}
.footer-bottom a { color: var(--ink-500); }
.footer-bottom a:hover { color: var(--orange-400); }

/* ============================================
   Sub-page hero
   ============================================ */
.page-hero {
  padding: 11rem 0 5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  margin: 1rem 0 1.5rem;
}
.page-hero p {
  max-width: 640px;
  font-size: 1.1rem;
  color: var(--ink-600);
  line-height: 1.6;
}
.page-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 1rem;
}
.page-hero .breadcrumb .sep { color: var(--accent); margin: 0 0.5rem; }

/* About page specific */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 4rem;
}
@media (max-width: 800px) { .values-grid { grid-template-columns: 1fr; } }
.value-card {
  padding: 2rem 2rem 2rem 0;
  border: none;
  border-radius: 0;
  border-top: 1px solid var(--border-strong);
  background: transparent;
  position: relative;
  transition: none;
}
.value-card + .value-card { padding-left: 2rem; border-left: 1px solid var(--border); }
@media (max-width: 800px) {
  .value-card + .value-card { padding-left: 0; border-left: none; }
}
.value-card:hover { border-color: var(--border-strong); }
.value-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.value-card + .value-card::before { left: 2rem; }
@media (max-width: 800px) {
  .value-card + .value-card::before { left: 0; }
}
.value-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 1.75rem;
  padding-top: 1.25rem;
}
.value-card h3 {
  font-size: 1.55rem;
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
}
.value-card p {
  color: var(--ink-600);
  line-height: 1.65;
  font-size: 0.98rem;
}

.timeline {
  margin-top: 5rem;
  position: relative;
  padding-left: 2rem;
  border-left: 1px solid var(--border-strong);
}
.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.4rem;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
}
.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.timeline-item h3 { font-size: 1.4rem; margin-bottom: 0.5rem; }
.timeline-item p { color: var(--ink-600); line-height: 1.6; max-width: 600px; }

/* Services page - detail */
.svc-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}
.svc-detail:nth-child(even) { direction: rtl; }
.svc-detail:nth-child(even) > * { direction: ltr; }
@media (max-width: 900px) {
  .svc-detail { grid-template-columns: 1fr; gap: 2rem; direction: ltr !important; }
}
.svc-detail h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin: 1rem 0 1.5rem; }
.svc-detail p { color: var(--ink-600); line-height: 1.7; margin-bottom: 1.25rem; }
.svc-features {
  list-style: none;
  margin-top: 1.5rem;
}
.svc-features li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: start;
  gap: 1rem;
  font-size: 0.95rem;
}
.svc-features li::before {
  content: counter(svc-c, decimal-leading-zero);
  counter-increment: svc-c;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  padding-top: 0.25rem;
}
.svc-features { counter-reset: svc-c; }
.svc-visual {
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  background: var(--ink-100);
  position: relative;
  overflow: hidden;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.contact-form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 600px) { .contact-form .row { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-500);
}
.field input,
.field textarea,
.field select {
  font: inherit;
  font-size: 1rem;
  padding: 0.85rem 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-strong);
  color: var(--fg);
  transition: border-color .25s;
  outline: none;
  resize: vertical;
}
.field input:focus,
.field textarea:focus,
.field select:focus { border-bottom-color: var(--accent); }

.contact-info {
  padding: 0;
  background: transparent;
  border-left: 1px solid var(--border-strong);
  padding-left: clamp(1.5rem, 3vw, 2.5rem);
}
@media (max-width: 900px) {
  .contact-info { border-left: none; padding-left: 0; border-top: 1px solid var(--border-strong); padding-top: 2.5rem; margin-top: 1rem; }
}
.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1.75rem;
  letter-spacing: -0.01em;
}
.contact-info-row {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.contact-info-row:first-of-type { padding-top: 0; }
.contact-info-row:last-child { border-bottom: none; }
.contact-info-row .label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 0.5rem;
}
.contact-info-row .value { font-size: 0.95rem; color: var(--fg); line-height: 1.5; }
.contact-info-row a { color: var(--fg); transition: color .15s; }
.contact-info-row a:hover { color: var(--accent); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 28px;
  height: 28px;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--fg);
  transition: all .3s var(--ease-out);
}
.nav-toggle span:nth-child(1) { top: 9px; }
.nav-toggle span:nth-child(2) { top: 17px; }
.nav-toggle.open span:nth-child(1) { top: 13px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { top: 13px; transform: rotate(-45deg); }

@media (max-width: 800px) {
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem var(--gutter);
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px -8px rgba(0,0,0,0.08);
    transform: translateY(-110%);
    transition: transform .3s var(--ease-out);
    height: calc(100vh - 64px);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-toggle { display: block; }
  .nav-menu a { font-size: 1.25rem; }
  /* Hide CTA in nav on mobile — accessible via hamburger or hero CTA */
  .nav-right > .btn { display: none; }
}

/* Reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ============================================
   Trust strip — sector logos + certifications
   ============================================ */
.trust {
  padding: 5rem 0 4rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.trust-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-500);
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}
.trust-label::before,
.trust-label::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 32px;
  height: 1px;
  background: var(--border-strong);
}
.trust-label::before { right: calc(50% + 14em); }
.trust-label::after  { left: calc(50% + 14em); }

.trust-logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin-bottom: 3rem;
  position: relative;
}
.trust-logo {
  padding: 0 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 70px;
  position: relative;
}
.trust-logo + .trust-logo::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12%;
  bottom: 12%;
  width: 1px;
  background: var(--border-strong);
}
.trust-logo span {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--ink-800);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.trust-logo em {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  font-style: normal;
  color: var(--accent);
}
.trust-certs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1.75rem 2.25rem;
  padding-top: 2rem;
  border-top: 1px dashed var(--border-strong);
}
.cert {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink-600);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color .2s;
}
.cert:hover { color: var(--ink-900); }
.cert svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .trust-label::before,
  .trust-label::after { display: none; }
  .trust-logos { grid-template-columns: repeat(3, 1fr); row-gap: 1.75rem; }
  .trust-logo + .trust-logo:nth-child(3n+1)::before { display: none; }
}
@media (max-width: 600px) {
  .trust { padding: 3.5rem 0 3rem; }
  .trust-logos { grid-template-columns: repeat(2, 1fr); }
  .trust-logo + .trust-logo:nth-child(2n+1)::before { display: none; }
  .trust-logo + .trust-logo:nth-child(3n+1)::before { display: block; }
  .trust-logo span { font-size: 0.95rem; }
  .trust-certs { gap: 1.1rem 1.5rem; }
  .cert { font-size: 0.68rem; }
}

/* ============================================
   Leadership grid (About page)
   ============================================ */
.team {
  padding: 6rem 0;
  background: var(--bg);
}
.team-card {
  background: transparent;
  border: none;
  border-top: 1px solid var(--border-strong);
  padding: 2.25rem 0 0;
  border-radius: 0;
  position: relative;
  transition: transform .3s var(--ease-out);
}
.team-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.team-card:hover {
  transform: translateY(-3px);
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 3rem;
  margin-top: 3rem;
}
@media (max-width: 900px) {
  .team-grid { grid-template-columns: 1fr; gap: 0; }
  .team-card { padding-bottom: 2rem; }
}
.team-photo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange-200) 0%, var(--orange-400) 100%);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.team-photo::after {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  background: var(--bg-alt);
  z-index: 0;
}
.team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}
.team-monogram {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-style: italic;
  color: var(--ink-700);
  position: relative;
  z-index: 1;
}
.team-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}
.team-role {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.team-bio {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-600);
  margin-bottom: 1.25rem;
}
.team-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.team-cert-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--ink-600);
}
.team-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--ink-700);
  font-weight: 500;
}
.team-link:hover { color: var(--accent); }
.team-link svg { width: 14px; height: 14px; }

@media (max-width: 900px) {
  .team { padding: 4rem 0; }
}

/* ============================================
   FAQ page
   ============================================ */
.faq-section {
  padding: 5rem 0 6rem;
}
.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.faq-aside {
  position: sticky;
  top: 6rem;
  padding-right: 1rem;
}
.faq-aside-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin: 1rem 0 1.5rem;
  letter-spacing: -0.015em;
}
.faq-aside-text {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-600);
  margin-bottom: 2rem;
  max-width: 30em;
}
.faq-aside-tel {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-800);
  transition: all .2s var(--ease-out);
  text-decoration: none;
}
.faq-aside-tel:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
.faq-aside-tel svg { width: 16px; height: 16px; }

.faq-list { max-width: 720px; }

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.35;
  list-style: none;
  padding: 1.5rem 0;
  transition: color .2s;
}
.faq-q:hover { color: var(--accent); }
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
  content: '';
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 5V19M5 12H19' stroke='%23F28C1A' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-size: contain;
  margin-top: 0.55rem;
  transition: transform .3s var(--ease-out);
}
.faq-item[open] .faq-q::after { transform: rotate(45deg); }
.faq-a {
  padding: 0 0 1.75rem;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-600);
  max-width: 720px;
}
.faq-a p + p { margin-top: 0.85rem; }
.faq-a a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.faq-a strong { color: var(--ink-900); font-weight: 600; }

@media (max-width: 900px) {
  .faq-grid { grid-template-columns: 1fr; }
  .faq-aside { position: static; padding-right: 0; margin-bottom: 1rem; }
}
@media (max-width: 600px) {
  .faq-section { padding: 3rem 0 4rem; }
  .faq-q { font-size: 1.1rem; gap: 1rem; padding: 1.25rem 0; }
  .faq-a { font-size: 0.95rem; }
}

/* ============================================
   Small-screen polish (≤ 600px)
   ============================================ */
@media (max-width: 600px) {
  :root { --gutter: 1.25rem; }

  h1 { font-size: clamp(2.25rem, 10vw, 3.25rem); line-height: 1.05; }
  h2 { font-size: clamp(1.75rem, 7vw, 2.5rem); }

  .hero {
    min-height: auto;
    padding: 7rem 0 4rem;
  }
  .hero-lede { font-size: 1rem; }
  .hero-actions { gap: 0.6rem; }
  .hero-actions .btn { padding: 0.75rem 1.25rem; font-size: 0.85rem; }
  .dot-field { width: 75%; right: -25%; opacity: 0.3; }

  .nav { padding: 0.75rem var(--gutter); }
  .nav-logo img { height: 38px; }

  .page-hero { padding: 6rem 0 2.5rem; }
  .page-hero h1 { font-size: clamp(2rem, 8vw, 3rem); }

  .stat { padding: 1.5rem 1rem; }
  .stat-num { font-size: 2rem !important; }

  .cta-content h2 { font-size: clamp(1.75rem, 7vw, 2.5rem); }

  /* Service detail flips (RTL trick) back to single column on mobile */
  .svc-detail, .svc-detail:nth-child(even) {
    direction: ltr;
    grid-template-columns: 1fr;
  }
  .svc-detail > * { direction: ltr; }

  /* Case study cards reflow */
  .case-grid { grid-template-columns: 1fr; }

  /* Contact info card */
  .contact-info { padding: 1.5rem; }
}

/* ============================================
   Extra-small (≤ 380px, iPhone SE / mini)
   ============================================ */
@media (max-width: 380px) {
  h1 { font-size: 2rem; }
  .nav-logo img { height: 34px; }
  .lang-current { padding: 0.4rem 0.65rem; font-size: 0.7rem; }
  .btn { padding: 0.7rem 1.1rem; font-size: 0.8rem; }
}

/* ============================================
   CJK typography refinements
   ============================================ */
html[lang="zh-TW"] body,
html[lang="zh-CN"] body,
html[lang="ja"] body {
  font-family: 'Noto Sans TC', 'Noto Sans SC', 'Noto Sans JP', var(--font-body);
}
html[lang="zh-TW"] h1, html[lang="zh-TW"] h2, html[lang="zh-TW"] h3,
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3 {
  font-family: 'Noto Serif TC', 'Noto Serif SC', var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
}
html[lang="ja"] h1, html[lang="ja"] h2, html[lang="ja"] h3 {
  font-family: 'Noto Serif JP', var(--font-display);
  font-weight: 500;
}
/* CJK gets slightly tighter line-height to compensate for larger character heights */
html[lang="zh-TW"] h1, html[lang="zh-CN"] h1, html[lang="ja"] h1 {
  line-height: 1.15;
}

/* ============================================
   Accessibility — reduced motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================
   Focus-visible — keyboard accessibility
   ============================================ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
.btn:focus-visible { outline-offset: 4px; }

/* ============================================
   Typographic micro-polish
   ============================================ */
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
body {
  font-feature-settings: "kern" on, "liga" on, "calt" on;
}
h1, h2, h3, .stat-num, .hero-aside-num {
  font-feature-settings: "kern" on, "liga" on, "ss01" on, "onum" on;
  text-wrap: balance;
}
p, .hero-lede, .team-bio, .faq-a, .case-card p {
  text-wrap: pretty;
  hyphens: auto;
  -webkit-hyphens: auto;
}
/* Disable hyphens on CJK */
html[lang="zh-TW"] p, html[lang="zh-CN"] p, html[lang="ja"] p {
  hyphens: none;
  -webkit-hyphens: none;
}

/* ============================================
   Refined hover states for all cards
   ============================================ */
.case-card,
.value-card,
.team-card {
  transition: transform .35s var(--ease-out),
              border-color .35s var(--ease-out),
              box-shadow .35s var(--ease-out);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px -16px rgba(11, 10, 9, 0.18);
}
.value-card:hover {
  border-color: var(--accent);
}

/* Lift on hero CTA */
.btn { transition: transform .2s var(--ease-out), background .2s, color .2s, border-color .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 18px -10px rgba(11, 10, 9, 0.35); }
.btn-outline:hover {
  background: var(--ink-900);
  color: var(--bg);
  border-color: var(--ink-900);
}

/* Link styling — global */
.faq-a a, .hero-lede a {
  text-decoration: underline;
  text-decoration-color: var(--orange-200);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: text-decoration-color .2s;
}
.faq-a a:hover, .hero-lede a:hover { text-decoration-color: var(--accent); }