/* ============================================================
   Linkyo — Singapore-based independent advisory firm
   Minimal / Premium / Professional / Modern
   ============================================================ */

:root {
  --ink:       #0F1A24;
  --ink-2:     #17262F;
  --paper:     #FFFFFF;
  --paper-2:   #F5F6F7;
  --line:      #E3E6E9;
  --line-dark: rgba(255,255,255,.13);
  --body:      #4E5C68;
  --body-dark: rgba(226,233,239,.70);
  --muted:     #7B8794;
  --accent:    #B8823A;
  --accent-lt: #D6AC6B;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Helvetica Neue",
          Helvetica, Arial, sans-serif;

  --wrap: 1180px;
  --gut: clamp(22px, 5vw, 60px);
  --sec: clamp(72px, 9vw, 132px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -.003em;
}

img, svg { max-width: 100%; }
a { color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -.028em;
}
h1 { font-size: clamp(2.5rem, 5.6vw, 4.15rem); }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.85rem); }
h3 { font-size: clamp(1.12rem, 1.6vw, 1.32rem); line-height: 1.28; letter-spacing: -.018em; }
p  { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.section { padding-block: var(--sec); }
.section--tight { padding-block: clamp(54px, 6.5vw, 92px); }
.tinted { background: var(--paper-2); }
.dark { background: var(--ink); color: var(--body-dark); }
.dark h1, .dark h2, .dark h3, .dark h4 { color: #fff; }

.eyebrow {
  display: flex; align-items: center; gap: .75rem;
  margin: 0 0 1.15rem;
  font-size: .715rem; font-weight: 600; letter-spacing: .19em; text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; flex: none; }

.lede { font-size: clamp(1.06rem, 1.45vw, 1.22rem); line-height: 1.6; color: var(--body); max-width: 60ch; }
.dark .lede { color: var(--body-dark); }
.measure { max-width: 22ch; }
.measure-p { max-width: 64ch; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  font-size: .855rem; font-weight: 600; letter-spacing: .01em;
  padding: .95rem 1.65rem; border: 1px solid var(--ink); border-radius: 3px;
  background: var(--ink); color: #fff; text-decoration: none;
  transition: background .28s var(--ease), border-color .28s var(--ease), color .28s var(--ease);
  cursor: pointer;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.dark .btn, .hero .btn { background: #fff; color: var(--ink); border-color: #fff; }
.dark .btn:hover, .hero .btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.dark .btn--ghost, .hero .btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.32); }
.dark .btn--ghost:hover, .hero .btn--ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }

.arrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .84rem; font-weight: 600; color: var(--ink); text-decoration: none;
  transition: color .24s var(--ease);
}
.arrow svg { transition: transform .28s var(--ease); }
.arrow:hover { color: var(--accent); }
.arrow:hover svg { transform: translateX(4px); }
.dark .arrow { color: #fff; }
.dark .arrow:hover { color: var(--accent-lt); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; height: 76px; }
.brand { display: flex; align-items: center; flex: none; text-decoration: none; }
.brand img { height: 27px; width: auto; display: block; }

.nav { display: flex; align-items: center; gap: 2.1rem; }
.nav a {
  position: relative; text-decoration: none; color: var(--ink);
  font-size: .905rem; font-weight: 500; padding-block: .4rem;
  transition: color .24s var(--ease);
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1.5px; width: 0;
  background: var(--accent); transition: width .28s var(--ease);
}
.nav a:hover::after, .nav a[aria-current="page"]::after { width: 100%; }
.nav a[aria-current="page"] { color: var(--accent); }

.header-cta { flex: none; }
.header-cta .btn { padding: .68rem 1.25rem; font-size: .82rem; }

.nav-toggle {
  display: none; appearance: none; border: 1px solid var(--line); background: #fff;
  border-radius: 3px; width: 42px; height: 40px; cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 17px; height: 1.5px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1.5px; background: var(--ink);
  transition: transform .3s var(--ease);
}
.nav-toggle span::before { top: -5.5px; } .nav-toggle span::after { top: 5.5px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero { background: var(--ink); color: var(--body-dark); position: relative; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(58% 74% at 84% 12%, rgba(184,130,58,.13), transparent 62%),
    radial-gradient(50% 60% at 4% 96%, rgba(40,74,104,.28), transparent 66%);
}
.hero .wrap { position: relative; z-index: 1; padding-block: clamp(88px, 13vw, 176px); }
.hero h1 { color: #fff; max-width: 15ch; }
.hero h1 .dot { color: var(--accent-lt); }
.hero .lede { margin-top: 1.75rem; font-size: clamp(1.1rem, 1.6vw, 1.34rem); }
.hero-cta { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2.5rem; }

.page-hero { background: var(--ink); color: var(--body-dark); position: relative; overflow: hidden; }
.page-hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(66% 96% at 88% 8%, rgba(184,130,58,.12), transparent 62%);
}
.page-hero .wrap { position: relative; z-index: 1; padding-block: clamp(66px, 8.5vw, 118px); }
.page-hero h1 { color: #fff; max-width: 17ch; }
.page-hero .lede { margin-top: 1.5rem; }

/* ---------- split ---------- */
.split { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: clamp(32px, 6vw, 84px); align-items: start; }

/* ---------- service cards ---------- */
.cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
.dark .cards { background: var(--line-dark); border-color: var(--line-dark); }
.card {
  background: var(--paper); padding: clamp(30px, 3.4vw, 46px);
  display: flex; flex-direction: column; gap: .9rem;
  transition: background .32s var(--ease);
}
.tinted .card { background: var(--paper-2); }
.dark .card { background: var(--ink); }
.card:hover { background: var(--paper-2); }
.tinted .card:hover { background: #fff; }
.dark .card:hover { background: var(--ink-2); }
.card .icon { color: var(--accent); }
.card .icon svg { display: block; }
.card p { font-size: .965rem; margin: 0; }
.card .arrow { margin-top: auto; padding-top: .8rem; }

/* ---------- process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: clamp(22px, 2.6vw, 38px); }
.step { position: relative; border-top: 2px solid var(--ink); padding-top: 1.3rem; }
.dark .step { border-top-color: var(--accent); }
.step .n { font-size: .72rem; font-weight: 700; letter-spacing: .16em; color: var(--accent); }
.step h3 { font-size: 1.16rem; margin: .5rem 0 .55rem; }
.step p { font-size: .93rem; margin: 0; }

/* ---------- focus areas ---------- */
.focus { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1px; background: var(--line-dark); border: 1px solid var(--line-dark); }
.focus div { background: var(--ink); padding: 1.75rem 1.6rem; }
.focus .n { font-size: .72rem; font-weight: 600; letter-spacing: .14em; color: var(--accent-lt); display: block; margin-bottom: .7rem; }
.focus p { color: #fff; font-size: 1.04rem; font-weight: 500; margin: 0; letter-spacing: -.01em; }

/* ---------- service detail rows ---------- */
.svc { border-top: 1px solid var(--line); padding-block: clamp(38px, 4.4vw, 62px); }
.svc:last-child { border-bottom: 1px solid var(--line); }
.svc-grid { display: grid; grid-template-columns: 4.5rem minmax(0,1fr) minmax(0,1fr); gap: clamp(18px, 3.4vw, 52px); align-items: start; }
.svc .n { font-size: .95rem; font-weight: 600; color: var(--accent); padding-top: .3rem; }
.svc h3 { font-size: clamp(1.35rem, 2vw, 1.7rem); margin-bottom: .75rem; }
.svc .eng-label { font-size: .715rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-bottom: .9rem; }
.svc ul { margin: 0; padding: 0; list-style: none; }
.svc li { position: relative; padding-left: 1.15rem; font-size: .95rem; line-height: 1.55; margin-bottom: .55rem; }
.svc li::before { content: ""; position: absolute; left: 0; top: .62em; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

/* ---------- insights ---------- */
.posts { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(24px, 3vw, 40px); }
.post {
  display: flex; flex-direction: column; gap: .7rem;
  padding-top: 1.4rem; border-top: 2px solid var(--ink);
  text-decoration: none; color: inherit;
  transition: border-color .28s var(--ease);
}
.post:hover { border-top-color: var(--accent); }
.post .meta { font-size: .74rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.post h3 { transition: color .24s var(--ease); }
.post:hover h3 { color: var(--accent); }
.post p { font-size: .945rem; margin: 0; }
.post .arrow { margin-top: auto; padding-top: .6rem; }

.posts--list { grid-template-columns: 1fr; gap: 0; }
.posts--list .post {
  display: grid;
  grid-template-columns: minmax(0,.3fr) minmax(0,1fr);
  column-gap: clamp(16px, 3vw, 48px); row-gap: .55rem;
  align-items: start;
  padding-block: clamp(28px, 3.2vw, 42px);
  border-top: 1px solid var(--line); border-bottom: 0;
}
/* left column holds the meta only; the rest stacks in the right column */
.posts--list .meta  { grid-column: 1; grid-row: 1 / span 3; }
.posts--list h3     { grid-column: 2; grid-row: 1; font-size: clamp(1.2rem,1.9vw,1.5rem); }
.posts--list p      { grid-column: 2; grid-row: 2; max-width: 62ch; }
.posts--list .arrow { grid-column: 2; grid-row: 3; padding-top: .35rem; margin-top: 0; }
.posts--list .post:last-child { border-bottom: 1px solid var(--line); }
.posts--list .post:hover { border-top-color: var(--accent); }

/* ---------- article ---------- */
.article { max-width: 72ch; margin-inline: auto; }
.article h2 { font-size: clamp(1.35rem, 2.1vw, 1.75rem); margin: 2.6rem 0 .9rem; }
.article h3 { font-size: 1.14rem; margin: 1.9rem 0 .6rem; }
.article p, .article li { font-size: 1.045rem; line-height: 1.75; }
.article ul, .article ol { margin: 0 0 1.2em; padding-left: 1.25rem; }
.article li { margin-bottom: .5rem; }
.article .note {
  margin: 2.4rem 0; padding: 1.3rem 1.5rem;
  background: var(--paper-2); border-left: 2px solid var(--accent); border-radius: 2px;
  font-size: .965rem;
}
.article-meta { font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.2rem; }

/* ---------- statements / principles ---------- */
.rows3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(26px,3vw,48px); }
.stmt { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.dark .stmt { border-top-color: var(--line-dark); }
.stmt h3 { margin-bottom: .6rem; }
.stmt p { font-size: .955rem; margin: 0; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: clamp(38px,6vw,84px); align-items: start; }
.detail { border-top: 1px solid var(--line); padding-block: 1.35rem; }
.detail dt { font-size: .715rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); margin-bottom: .4rem; }
.detail dd { margin: 0; font-size: 1.1rem; color: var(--ink); font-weight: 500; }
.detail dd a { text-decoration: none; border-bottom: 1px solid var(--line); transition: color .24s, border-color .24s; }
.detail dd a:hover { color: var(--accent); border-color: var(--accent); }
.detail dd small { display: block; font-size: .885rem; font-weight: 400; color: var(--body); margin-top: .35rem; }

form { display: grid; gap: 1.1rem; }
.field label { display: block; font-size: .715rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: .45rem; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: .97rem; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: 3px; padding: .8rem .9rem;
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}
.field textarea { min-height: 138px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(184,130,58,.13);
}
.field-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-note { font-size: .85rem; color: var(--muted); }

/* ---------- CTA band ---------- */
.cta { text-align: center; }
.cta h2 { max-width: 20ch; margin-inline: auto; }
.cta .lede { margin: 1.25rem auto 2.2rem; }
.cta .btn { margin-inline: .28rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--body-dark); padding-top: clamp(58px,7vw,88px); }
.footer-top { display: grid; grid-template-columns: minmax(0,1.5fr) repeat(2, minmax(0,1fr)); gap: clamp(32px,5vw,60px); }
.site-footer .brand img { height: 27px; }
.site-footer .brand { margin-bottom: 1.3rem; }
.footer-tag { max-width: 36ch; font-size: .95rem; }
.site-footer h4 { font-size: .715rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent-lt); margin-bottom: 1rem; font-weight: 600; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.site-footer a { text-decoration: none; font-size: .95rem; transition: color .24s var(--ease); }
.site-footer a:hover { color: var(--accent-lt); }
.footer-legal {
  margin-top: clamp(44px,6vw,72px); border-top: 1px solid var(--line-dark);
  padding-block: 1.6rem; display: flex; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap;
  font-size: .82rem;
}
.footer-legal .links { display: flex; gap: 1.4rem; flex-wrap: wrap; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .66s var(--ease), transform .66s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .split, .contact-grid { grid-template-columns: 1fr; }
  .steps, .focus { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .posts, .rows3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .svc-grid { grid-template-columns: 3rem minmax(0,1fr); }
  .svc-grid > *:nth-child(3) { grid-column: 2; margin-top: 1.4rem; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-top > *:first-child { grid-column: 1 / -1; }
  .header-cta { display: none; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: 76px 0 auto; background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: .4rem var(--gut) 1.5rem;
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: opacity .26s var(--ease), transform .26s var(--ease);
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { padding-block: .92rem; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav a::after { display: none; }
  .cards, .steps, .focus, .posts, .rows3 { grid-template-columns: 1fr; }
  .posts--list .post { grid-template-columns: 1fr; }
  .svc-grid { grid-template-columns: 1fr; }
  .svc-grid > *:nth-child(3) { grid-column: 1; }
  .svc .n { padding-top: 0; }
  .field-2 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; }
  .cta .btn { width: 100%; justify-content: center; margin: .3rem 0; }
}

/* ---------- language toggle ---------- */
.header-actions { display: flex; align-items: center; gap: .85rem; flex: none; }
.lang-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; background: #fff; }
.lang-toggle button {
  appearance: none; border: 0; background: transparent; cursor: pointer; font: inherit;
  font-size: .74rem; font-weight: 700; letter-spacing: .04em; padding: .42rem .66rem;
  color: var(--muted); transition: background .22s var(--ease), color .22s var(--ease);
}
.lang-toggle button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.header-btn { padding: .68rem 1.25rem; font-size: .82rem; }

/* ---------- Chinese typography ---------- */
html[lang="zh"] body {
  font-family: var(--sans), "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16.5px; line-height: 1.85; letter-spacing: 0;
}
html[lang="zh"] h1, html[lang="zh"] h2, html[lang="zh"] h3 { letter-spacing: .01em; line-height: 1.32; }
html[lang="zh"] h1 { font-size: clamp(2.05rem, 4.6vw, 3.4rem); }
html[lang="zh"] h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
html[lang="zh"] .eyebrow { letter-spacing: .11em; }
html[lang="zh"] .measure { max-width: 15ch; }
html[lang="zh"] .lede { max-width: 40ch; }
html[lang="zh"] .eng-label { letter-spacing: .06em; }
html[lang="zh"] .detail dt { letter-spacing: .07em; }
html[lang="zh"] .field label { letter-spacing: .05em; font-size: .8rem; }
html[lang="zh"] .site-footer h4 { letter-spacing: .07em; font-size: .82rem; }

/* ---------- empty state ---------- */
.empty {
  border-top: 2px solid var(--ink); padding-top: 1.6rem;
  max-width: 56ch; font-size: 1.05rem;
}