/* Samhna — company site */
:root {
  --ink: #14181c;
  --ink-soft: #2a3238;
  --mist: #e8eef2;
  --paper: #f4f7f9;
  --foam: #ffffff;
  --lagoon: #1a6b6b;
  --lagoon-deep: #0f4548;
  --ember: #c45c26;
  --ember-soft: #e8a06a;
  --line: rgba(20, 24, 28, 0.12);
  --shadow: 0 24px 60px rgba(15, 69, 72, 0.12);
  --font-display: "Fraunces", "Songti SC", "Noto Serif SC", serif;
  --font-body: "Manrope", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --max: 68rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--lagoon-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ember);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--foam);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
}

/* Atmosphere */
.sky {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 55% at 12% -10%, rgba(26, 107, 107, 0.22), transparent 55%),
    radial-gradient(ellipse 60% 45% at 92% 8%, rgba(196, 92, 38, 0.14), transparent 50%),
    radial-gradient(ellipse 70% 50% at 70% 100%, rgba(15, 69, 72, 0.1), transparent 55%),
    linear-gradient(165deg, #f7fafb 0%, #e7eef1 42%, #f3efe9 100%);
}

.sky::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 0.5rem;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
}

.nav-brand span {
  display: block;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  opacity: 0.7;
  margin-top: 0.15rem;
}

.nav-end {
  display: flex;
  align-items: center;
  gap: 1rem 1.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

.lang-switch a {
  color: var(--ink-soft);
  text-decoration: none;
}

.lang-switch a:hover,
.lang-switch a[aria-current="page"] {
  color: var(--lagoon-deep);
}

.lang-switch a[aria-current="page"] {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.lang-switch span {
  opacity: 0.35;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.92rem;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--lagoon);
}

/* Hero — one composition */
.hero {
  min-height: calc(100svh - 5rem);
  display: grid;
  align-content: center;
  padding: 2.5rem 0 4rem;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 8% -8% auto auto;
  width: min(42vw, 28rem);
  height: min(42vw, 28rem);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(26, 107, 107, 0.28), rgba(196, 92, 38, 0.08) 55%, transparent 70%);
  filter: blur(2px);
  animation: drift 18s var(--ease) infinite alternate;
  z-index: -1;
}

@keyframes drift {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(-6%, 8%) scale(1.08);
  }
}

.brand-mark {
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 12vw, 7.5rem);
  font-weight: 650;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 0.35rem;
  animation: rise 1s var(--ease) both;
}

.brand-mark em {
  font-style: normal;
  color: var(--lagoon);
}

.brand-cn {
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--ink-soft);
  margin: 0 0 2rem;
  animation: rise 1s var(--ease) 0.08s both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  font-weight: 550;
  line-height: 1.35;
  max-width: 18ch;
  margin: 0 0 1rem;
  animation: rise 1s var(--ease) 0.16s both;
}

.hero-lead {
  max-width: 36rem;
  font-size: 1.08rem;
  color: var(--ink-soft);
  margin: 0 0 2rem;
  animation: rise 1s var(--ease) 0.24s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: rise 1s var(--ease) 0.32s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  border-radius: 0.35rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--lagoon-deep);
  color: var(--foam);
}

.btn-primary:hover {
  background: var(--lagoon);
  color: var(--foam);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--lagoon);
  color: var(--lagoon-deep);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(1.1rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Sections */
section {
  padding: 4.5rem 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lagoon);
  margin: 0 0 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 550;
  line-height: 1.2;
  margin: 0 0 0.85rem;
  max-width: 16ch;
}

.section-lead {
  max-width: 38rem;
  color: var(--ink-soft);
  margin: 0 0 2.25rem;
}

.vision {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.vision-quote {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.2vw, 2.1rem);
  font-weight: 500;
  line-height: 1.45;
  max-width: 22ch;
  margin: 0;
  color: var(--ink);
}

.vision-quote span {
  display: block;
  margin-top: 1rem;
  font-size: 0.72em;
  color: var(--lagoon-deep);
}

/* Culture — numbered principles, not cards */
.culture {
  border-bottom: 1px solid var(--line);
}

.culture-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  counter-reset: none;
}

.culture-list li {
  display: grid;
  grid-template-columns: 3.25rem 1fr;
  gap: 1rem 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.culture-num {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 550;
  color: var(--lagoon);
  line-height: 1.4;
  padding-top: 0.1rem;
}

.culture-list h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  line-height: 1.3;
}

.culture-list p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 40rem;
  font-size: 0.98rem;
}

.culture-list li.is-pending .culture-num,
.culture-list li.is-pending h3 {
  color: rgba(42, 50, 56, 0.45);
}

.culture-list li.is-pending p {
  font-style: italic;
}

@media (min-width: 900px) {
  .culture-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 2.5rem;
    border-top: none;
  }

  .culture-list li {
    border-top: 1px solid var(--line);
  }

  .culture-list li:nth-child(odd) {
    padding-right: 0.5rem;
  }
}

/* Products — not cards-as-decoration; interaction = link */
.products-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.product {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1.25rem 2rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: background 0.25s var(--ease), padding-left 0.25s var(--ease);
}

a.product:hover {
  background: rgba(255, 255, 255, 0.45);
  padding-left: 0.5rem;
}

.product.is-static {
  cursor: default;
}

.product-name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
  margin: 0;
}

.product-tag {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--ember);
  margin: 0.2rem 0 0;
}

.product-desc {
  margin: 0;
  color: var(--ink-soft);
  max-width: 36rem;
}

@media (max-width: 640px) {
  .product {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

/* Company */
.company-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 800px) {
  .company-grid {
    grid-template-columns: 1fr;
  }
}

.meta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.meta-list li {
  margin: 0;
}

.meta-list dt,
.meta-k {
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lagoon);
  margin-bottom: 0.3rem;
}

.meta-list dd,
.meta-v {
  margin: 0;
  color: var(--ink);
}

.address {
  max-width: 22rem;
}

/* Legal pages */
.legal-page {
  padding: 2rem 0 5rem;
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 1.5rem 0 0.5rem;
}

.legal-meta {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin-bottom: 2.5rem;
}

.legal-page h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 2.25rem 0 0.75rem;
}

.legal-page p,
.legal-page li {
  color: var(--ink-soft);
  max-width: 42rem;
}

.legal-page ul {
  padding-left: 1.2rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 0 3rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

@media (max-width: 720px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.footer a:hover {
  color: var(--lagoon);
}

.footer-links {
  display: grid;
  gap: 0.45rem;
}

.footer-copy {
  margin-top: 2.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.footer-copy .beian {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.footer-copy .beian:hover {
  border-bottom-color: currentColor;
}