/* ============================================================
   原璟 YUANJING GLOBAL — styles
   Palette: 玉墨 jade-ink + 金玉 gold
   ============================================================ */
:root {
  --ink:        #071f1b;
  --ink-2:      #0b2b26;
  --jade:       #0f5d52;
  --jade-lt:    #1d7d6f;
  --gold:       #d4af6a;
  --gold-lt:    #e7c98f;
  --cream:      #f7f4ec;
  --paper:      #ffffff;
  --muted:      #5c6b67;
  --line:       rgba(15, 93, 82, .14);
  --shadow:     0 24px 60px -28px rgba(7, 31, 27, .35);
  --radius:     18px;
  --maxw:       1180px;
  --ease:       cubic-bezier(.22, 1, .36, 1);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system,
          BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --serif: "Songti SC", "STSong", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .4em; font-weight: 600; letter-spacing: .02em;
  padding: 14px 26px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s, color .3s;
  font-size: 15px;
}
.btn--sm { padding: 11px 20px; font-size: 14px; }
.btn--full { width: 100%; }
.btn--primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-lt));
  color: var(--ink);
  box-shadow: 0 14px 30px -14px rgba(212, 175, 106, .8);
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 20px 38px -14px rgba(212, 175, 106, .9); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn--ghost:hover { background: rgba(255,255,255,.1); transform: translateY(-3px); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .4s, box-shadow .4s, backdrop-filter .4s;
}
.nav.scrolled {
  background: rgba(7, 31, 27, .82);
  backdrop-filter: saturate(160%) blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: baseline; gap: 10px; color: #fff; }
.brand__mark { font-family: var(--serif); font-size: 24px; font-weight: 700; letter-spacing: 4px; color: var(--gold-lt); }
.brand__en { font-size: 11px; letter-spacing: 3px; color: rgba(255,255,255,.7); font-weight: 600; }
.nav__links { display: flex; align-items: center; gap: 30px; }
.nav__links a { color: rgba(255,255,255,.85); font-size: 15px; font-weight: 500; transition: color .2s; }
.nav__links a:hover { color: var(--gold-lt); }
.nav__cta {
  padding: 9px 20px; border: 1px solid var(--gold); border-radius: 999px;
  color: var(--gold-lt) !important;
}
.nav__cta:hover { background: var(--gold); color: var(--ink) !important; }
.nav__right { display: flex; align-items: center; gap: 14px; }
.lang {
  display: inline-flex; align-items: center; padding: 3px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.06);
}
.lang__btn {
  border: 0; cursor: pointer; background: transparent; color: rgba(255,255,255,.75);
  font: inherit; font-size: 13px; font-weight: 600; letter-spacing: .5px;
  padding: 5px 13px; border-radius: 999px; line-height: 1; transition: color .25s, background .25s, box-shadow .25s;
}
.lang__btn:hover { color: #fff; }
.lang__btn.is-active {
  background: linear-gradient(135deg, var(--gold), var(--gold-lt)); color: var(--ink);
  box-shadow: 0 4px 12px -4px rgba(212,175,106,.7);
}
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: .3s var(--ease); }
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; color: #fff; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(1100px 620px at 78% 8%, rgba(212,175,106,.22), transparent 60%),
    radial-gradient(900px 700px at 8% 92%, rgba(29,125,111,.35), transparent 55%),
    linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 48%, var(--jade) 130%);
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.045) 1px, transparent 1.4px);
  background-size: 26px 26px; opacity: .5;
}
.hero__inner { padding: 120px 24px 90px; }
.hero__eyebrow { color: var(--gold-lt); letter-spacing: 3px; font-size: 13px; font-weight: 600; margin-bottom: 22px; }
.hero__title { font-size: clamp(38px, 6vw, 72px); line-height: 1.12; font-weight: 800; letter-spacing: 1px; }
.hero__title .grad {
  background: linear-gradient(100deg, var(--gold-lt), #fff 55%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { margin: 26px 0 34px; max-width: 620px; font-size: clamp(16px, 2vw, 19px); color: rgba(255,255,255,.82); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 44px; margin-top: 64px; }
.stat b { font-family: var(--serif); font-size: 42px; color: var(--gold-lt); font-weight: 700; display: block; line-height: 1; }
.stat span { font-size: 13px; color: rgba(255,255,255,.65); letter-spacing: .5px; }
.hero__scroll { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); }
.hero__scroll span {
  display: block; width: 24px; height: 40px; border: 2px solid rgba(255,255,255,.4); border-radius: 14px; position: relative;
}
.hero__scroll span::after {
  content: ""; position: absolute; top: 7px; left: 50%; width: 4px; height: 8px; margin-left: -2px;
  background: var(--gold-lt); border-radius: 2px; animation: scroll 1.6s var(--ease) infinite;
}
@keyframes scroll { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 80%,100% { opacity: 0; transform: translateY(14px); } }

/* ---------- Section base ---------- */
.section { padding: clamp(72px, 10vw, 130px) 0; }
.section__head { max-width: 720px; margin: 0 auto clamp(46px, 6vw, 68px); text-align: center; }
.kicker { color: var(--jade-lt); font-size: 13px; font-weight: 700; letter-spacing: 3px; margin-bottom: 14px; }
.section__title { font-family: var(--serif); font-size: clamp(28px, 4vw, 44px); font-weight: 700; color: var(--ink); letter-spacing: 1px; line-height: 1.25; }
.section__sub { margin-top: 16px; color: var(--muted); font-size: 17px; }

/* ---------- Values ---------- */
.values { background: linear-gradient(180deg, var(--cream), #fff); }
.values__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.value {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 26px; position: relative; overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s;
}
.value::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--jade), var(--gold));
  transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease);
}
.value:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.value:hover::before { transform: scaleX(1); }
.value__idx { font-family: var(--serif); font-size: 34px; font-weight: 700; color: var(--jade); letter-spacing: 6px; margin-bottom: 12px; }
.value h3 { font-size: 14px; color: var(--gold); letter-spacing: .5px; margin-bottom: 14px; font-weight: 600; }
.value p { color: var(--muted); font-size: 15px; }

/* ---------- Services ---------- */
.services { background: #fff; }
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc {
  background: linear-gradient(180deg, #fff, var(--cream));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 30px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.svc:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.svc__icon {
  width: 60px; height: 60px; display: grid; place-items: center; font-size: 28px;
  background: linear-gradient(135deg, rgba(15,93,82,.1), rgba(212,175,106,.16));
  border-radius: 16px; margin-bottom: 22px;
}
.svc h3 { font-size: 21px; color: var(--ink); margin-bottom: 4px; letter-spacing: .5px; }
.svc__en { font-size: 12px; letter-spacing: 1.5px; color: var(--jade-lt); text-transform: uppercase; margin-bottom: 14px; font-weight: 600; }
.svc p { color: var(--muted); font-size: 15px; }
.svc--cta {
  background: linear-gradient(150deg, var(--ink), var(--jade));
  color: #fff; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 14px;
}
.svc--cta h3 { color: #fff; }
.svc--cta p { color: rgba(255,255,255,.8); }

/* ---------- Global ---------- */
.global { background: linear-gradient(165deg, var(--ink), var(--ink-2) 60%, var(--jade)); color: #fff; }
.global__inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.global .kicker { color: var(--gold-lt); }
.global .section__title { color: #fff; }
.global__text > p { margin: 18px 0 28px; color: rgba(255,255,255,.82); font-size: 17px; max-width: 540px; }
.global__list { list-style: none; display: grid; gap: 16px; }
.global__list li {
  padding-left: 0; color: rgba(255,255,255,.78); font-size: 15px;
  border-left: 2px solid var(--gold); padding: 4px 0 4px 18px;
}
.global__list span { display: block; color: var(--gold-lt); font-weight: 700; font-size: 15px; margin-bottom: 2px; }

/* orbit */
.global__panel { display: grid; place-items: center; }
.orbit { position: relative; width: min(360px, 80vw); aspect-ratio: 1; }
.orbit::before, .orbit::after {
  content: ""; position: absolute; inset: 0; border: 1px dashed rgba(255,255,255,.18); border-radius: 50%;
}
.orbit::after { inset: 18%; border-style: solid; border-color: rgba(212,175,106,.22); }
.orbit__core {
  position: absolute; inset: 32%; border-radius: 50%; display: grid; place-content: center; text-align: center;
  background: radial-gradient(circle at 35% 30%, var(--jade-lt), var(--jade));
  color: #fff; font-family: var(--serif); font-size: 26px; letter-spacing: 3px; font-weight: 700;
  box-shadow: 0 20px 50px -18px rgba(0,0,0,.6), inset 0 0 30px rgba(212,175,106,.25);
}
.orbit__core small { display: block; font-family: var(--font); font-size: 10px; letter-spacing: 3px; color: var(--gold-lt); margin-top: 4px; font-weight: 600; }
.orbit__dot {
  position: absolute; top: 50%; left: 50%; width: 46px; height: 46px; margin: -23px; display: grid; place-items: center;
  font-size: 22px; background: rgba(255,255,255,.08); backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.16); border-radius: 50%;
  transform: rotate(calc(var(--a) * 60deg)) translateX(min(180px, 40vw)) rotate(calc(var(--a) * -60deg));
  animation: spin 26s linear infinite;
}
@keyframes spin {
  from { transform: rotate(calc(var(--a) * 60deg)) translateX(min(180px, 40vw)) rotate(calc(var(--a) * -60deg)); }
  to   { transform: rotate(calc(var(--a) * 60deg + 360deg)) translateX(min(180px, 40vw)) rotate(calc(var(--a) * -60deg - 360deg)); }
}

/* ---------- About ---------- */
.about { background: var(--cream); }
.about__grid { display: grid; gap: 40px; }
.about__lead {
  font-family: var(--serif); font-size: clamp(20px, 2.6vw, 28px); line-height: 1.7; color: var(--ink);
  max-width: 880px; margin: 0 auto; text-align: center;
}
.about__cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.acard { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
.acard:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.acard b { display: block; font-size: 18px; color: var(--jade); margin-bottom: 10px; }
.acard p { color: var(--muted); font-size: 15px; }

/* ---------- Contact ---------- */
.contact { background: #fff; }
.contact__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact__text > p { color: var(--muted); margin: 16px 0 28px; font-size: 17px; }
.contact__meta { list-style: none; display: grid; gap: 14px; }
.contact__meta li { display: flex; gap: 14px; font-size: 15px; color: var(--ink); align-items: baseline; }
.contact__meta span { color: var(--jade-lt); font-weight: 700; min-width: 40px; }
.contact__meta a { color: var(--jade); border-bottom: 1px solid var(--line); }
.contact__form { background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 15px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px;
  background: #fff; color: var(--ink); transition: border-color .2s, box-shadow .2s; resize: vertical;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--jade-lt); box-shadow: 0 0 0 3px rgba(29,125,111,.14);
}
.contact__note { font-size: 14px; text-align: center; min-height: 20px; }
.contact__note.ok { color: var(--jade); }
.contact__note.err { color: #c0392b; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 64px 0 28px; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer__brand .brand__mark { font-size: 26px; }
.footer__brand p { margin-top: 12px; color: var(--gold-lt); letter-spacing: 3px; font-size: 14px; }
.footer__nav { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
.footer__nav a { color: rgba(255,255,255,.72); font-size: 15px; transition: color .2s; }
.footer__nav a:hover { color: var(--gold-lt); }
.footer__bar { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; padding-top: 26px; font-size: 13px; color: rgba(255,255,255,.5); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .values__grid { grid-template-columns: repeat(2, 1fr); }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .about__cards { grid-template-columns: 1fr; }
  .global__inner, .contact__inner { grid-template-columns: 1fr; gap: 40px; }
  .global__panel { order: -1; }
}
@media (max-width: 720px) {
  .nav__links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 0; align-items: stretch;
    background: rgba(7,31,27,.97); backdrop-filter: blur(14px); padding: 8px 0 20px;
    transform: translateY(-120%); transition: transform .4s var(--ease); box-shadow: var(--shadow);
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a { padding: 16px 24px; border-bottom: 1px solid rgba(255,255,255,.06); }
  .nav__cta { margin: 12px 24px 0; text-align: center; }
  .nav__toggle { display: flex; }
  .values__grid, .services__grid { grid-template-columns: 1fr; }
  .hero__stats { gap: 28px; }
  .stat b { font-size: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}