:root {
  --ink: #141b2d;
  --muted: #657086;
  --blue: #1467f5;
  --blue-deep: #0b4ec5;
  --line: #dbe2ec;
  --paper: #f7f9fc;
  --mint: #e6f6ef;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans Lao", "Noto Sans Thai", "Be Vietnam Pro", Arial, sans-serif; line-height: 1.62; text-rendering: optimizeLegibility; }
html[lang="en"] body { font-family: "Be Vietnam Pro", "Noto Sans Thai", sans-serif; }
html[lang="zh"] body { font-family: "Noto Sans SC", sans-serif; }
a { color: inherit; text-decoration: none; }

.site-header { align-items: center; background: rgba(247, 249, 252, .94); border-bottom: 1px solid rgba(219, 226, 236, .8); display: flex; height: 76px; justify-content: space-between; padding: 0 clamp(24px, 5vw, 84px); position: sticky; top: 0; z-index: 10; }
.brand { align-items: center; display: inline-flex; font-family: "Be Vietnam Pro", sans-serif; font-size: 21px; font-weight: 800; gap: 9px; letter-spacing: 0; }
.brand-mark { align-items: center; background: white; border: 1px solid #e4e9f0; border-radius: 8px; display: inline-flex; height: 34px; justify-content: center; overflow: hidden; width: 34px; }
.brand-mark img { display: block; height: 100%; object-fit: contain; width: 100%; }
nav { display: flex; gap: clamp(20px, 3vw, 42px); }
nav a, .header-link { color: #3f4a60; font-size: 14px; font-weight: 600; }
nav a:hover, .header-link:hover { color: var(--blue); }
.header-link { border-bottom: 1px solid var(--ink); padding-bottom: 3px; }
.header-actions { align-items: center; display: flex; gap: 24px; }
.language-picker { align-items: center; color: var(--muted); display: flex; font-size: 12px; font-weight: 700; gap: 7px; }
.language-picker select { appearance: none; background: white; border: 1px solid var(--line); border-radius: 5px; color: var(--ink); cursor: pointer; font: inherit; font-size: 13px; font-weight: 700; min-width: 82px; padding: 7px 25px 7px 9px; }

.hero { color: white; min-height: min(790px, calc(100vh - 76px)); overflow: hidden; position: relative; }
.hero-image, .hero-shade { height: 100%; inset: 0; position: absolute; width: 100%; }
.hero-image { object-fit: cover; object-position: center; }
.hero-shade { background: linear-gradient(90deg, rgba(8, 23, 47, .89) 0%, rgba(8, 23, 47, .55) 43%, rgba(8, 23, 47, .16) 100%); }
.hero-content { max-width: 740px; padding: clamp(96px, 14vh, 170px) clamp(24px, 9vw, 154px) 100px; position: relative; }
.eyebrow, .section-label { font-family: "Be Vietnam Pro", "Noto Sans Lao", sans-serif; font-size: 11px; font-weight: 800; letter-spacing: 1.1px; margin: 0 0 22px; }
.hero h1, h2 { font-size: clamp(42px, 5.2vw, 76px); font-weight: 800; letter-spacing: 0; line-height: 1.26; margin: 0; }
h1[data-i18n], h2[data-i18n] { white-space: pre-line; }
.hero-copy { font-size: 18px; line-height: 1.8; margin: 28px 0 36px; max-width: 580px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.legal-shortcuts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.legal-shortcuts a { backdrop-filter: blur(8px); background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .56); border-radius: 6px; color: white; font-size: 13px; font-weight: 750; padding: 9px 12px; }
.legal-shortcuts a:hover { background: rgba(255, 255, 255, .24); }
.button { align-items: center; border: 1px solid transparent; border-radius: 6px; display: inline-flex; font-size: 15px; font-weight: 700; justify-content: center; line-height: 1.25; min-height: 48px; padding: 0 22px; }
.button-primary { background: white; color: var(--blue-deep); }
.button-secondary { border-color: rgba(255, 255, 255, .72); color: white; }
.button:hover { transform: translateY(-1px); transition: transform .18s ease; }
.hero-scroll { bottom: 34px; font-size: 13px; font-weight: 650; left: clamp(24px, 9vw, 154px); position: absolute; z-index: 1; }
.hero-scroll span { font-size: 20px; margin-left: 8px; }

.section { padding: clamp(78px, 11vw, 150px) clamp(24px, 9vw, 154px); }
.section-label { color: var(--blue); }
.intro { background: white; }
.intro-grid, .principles-grid { display: grid; gap: 12vw; grid-template-columns: minmax(0, 1.22fr) minmax(280px, .78fr); }
.intro h2, .principles h2, .section-heading h2 { font-size: clamp(34px, 4.1vw, 61px); }
.intro p, .section-heading > p { color: var(--muted); font-size: 17px; line-height: 1.82; margin: 0 0 20px; }

.platform { background: var(--mint); }
.section-heading { align-items: end; display: flex; justify-content: space-between; gap: 50px; }
.section-heading > p { max-width: 385px; }
.platform-list { border-top: 1px solid #b8d6ca; margin-top: 72px; }
.platform-list article { align-items: baseline; border-bottom: 1px solid #b8d6ca; display: grid; gap: 24px; grid-template-columns: 52px minmax(220px, .8fr) minmax(260px, 1.2fr); padding: 30px 0; }
.platform-list span { color: #2d8067; font-size: 13px; font-weight: 800; }
.platform-list h3, .principle-items h3 { font-size: 21px; font-weight: 700; line-height: 1.38; margin: 0; }
.platform-list p, .principle-items p { color: var(--muted); line-height: 1.78; margin: 0; }

.principles { background: var(--ink); color: white; }
.principles .section-label { color: #87bbff; }
.principle-items { border-top: 1px solid #4a566c; }
.principle-items article { border-bottom: 1px solid #4a566c; padding: 23px 0 25px; }
.principle-items p { color: #c6cede; margin-top: 8px; }

.closing { background: var(--blue); color: white; padding: clamp(84px, 12vw, 164px) clamp(24px, 9vw, 154px); }
.closing h2 { font-size: clamp(39px, 5vw, 72px); }
.closing > p:not(.eyebrow) { font-size: 17px; line-height: 1.7; margin: 25px 0 32px; max-width: 520px; }
.button-light { background: white; color: var(--blue-deep); }
footer { align-items: center; background: white; color: var(--muted); display: flex; font-size: 13px; gap: 30px; justify-content: space-between; padding: 34px clamp(24px, 5vw, 84px); }
footer .brand { color: var(--ink); font-size: 18px; }
footer .brand-mark { border-radius: 7px; height: 27px; width: 27px; }
footer .brand-mark img { height: 100%; object-fit: contain; width: 100%; }
footer p { margin: 0; }
.legal-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.legal-links a { color: #53627a; font-size: 13px; font-weight: 700; }
.legal-links a:hover { color: var(--blue); }

@media (max-width: 760px) {
  .site-header { height: 64px; padding: 0 20px; }
  nav { display: none; }
  .header-actions { gap: 12px; }
  .language-picker > span, .header-link { display: none; }
  .hero { min-height: 680px; }
  .hero-shade { background: linear-gradient(0deg, rgba(8, 23, 47, .87), rgba(8, 23, 47, .24)); }
  .hero-content { padding: 210px 24px 94px; }
  .hero h1 { font-size: 48px; }
  .hero-copy { font-size: 16px; }
  .hero-scroll { left: 24px; }
  .intro-grid, .principles-grid { gap: 34px; grid-template-columns: 1fr; }
  .section-heading { align-items: start; flex-direction: column; gap: 25px; }
  .platform-list { margin-top: 45px; }
  .platform-list article { gap: 7px; grid-template-columns: 40px 1fr; padding: 25px 0; }
  .platform-list p { grid-column: 2; }
  footer { align-items: flex-start; flex-direction: column; gap: 16px; }
}