/* BAMBROOM — bamboo straw + municipal green + hi-vis orange */
:root {
  --paper: #f6f1e6;
  --paper-2: #ece3cf;
  --straw: #d9bf86;
  --bamboo: #b08a3e;
  --green: #24412f;
  --green-2: #2f5a3d;
  --ink: #1b211d;
  --muted: #5d625b;
  --hivis: #f26a1b;
  --hivis-2: #d9560c;
  --white: #fffdf8;
  --radius: 4px;
  --wrap: 1200px;
  --font-head: "Barlow Condensed", "Noto Sans Thai", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans", "Noto Sans Thai", "Noto Sans JP", system-ui, sans-serif;
}
:lang(ja) { --font-head: "Noto Sans JP", sans-serif; }
:lang(th) { --font-head: "Noto Sans Thai", sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; margin: 0 0 .5em; letter-spacing: .01em; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.4rem); font-weight: 700; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); font-weight: 700; }
h3 { font-size: 1.35rem; font-weight: 600; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block; font: 600 .8rem/1 var(--font-body);
  text-transform: uppercase; letter-spacing: .14em; color: var(--hivis);
  margin-bottom: 1rem;
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.section { padding: 88px 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head p { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  padding: .85em 1.5em; border-radius: var(--radius);
  font: 600 .95rem/1 var(--font-body); text-decoration: none;
  border: 2px solid transparent; cursor: pointer; transition: .2s;
}
.btn-accent { background: var(--hivis); color: #fff; }
.btn-accent:hover { background: var(--hivis-2); }
.btn-ghost { border-color: currentColor; color: var(--white); }
.btn-ghost:hover { background: var(--white); color: var(--green); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--green); color: var(--white); }
.nav { display: flex; align-items: center; gap: 24px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 1.6rem/1 "Barlow Condensed", sans-serif; letter-spacing: .06em; }
.brand svg { color: var(--straw); }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a { text-decoration: none; font-weight: 500; opacity: .85; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav-links a:hover, .nav-links a[aria-current="page"] { opacity: 1; border-color: var(--hivis); }
.lang {
  background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,.35);
  border-radius: var(--radius); padding: 8px 10px; font: inherit; font-size: .9rem; cursor: pointer;
}
.lang option { color: var(--ink); }
.nav-toggle { display: none; background: none; border: 0; color: inherit; font-size: 1.6rem; cursor: pointer; }
/* hi-vis vest stripe */
.hivis { height: 6px; background: repeating-linear-gradient(90deg, var(--hivis) 0 64px, #f6d04d 64px 72px); }

/* Hero */
.hero { background: var(--green); color: var(--white); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; min-height: 640px; }
.hero-copy { padding: 96px 48px 96px 0; align-self: center; }
.hero-copy p { color: rgba(255,253,248,.8); font-size: 1.15rem; max-width: 54ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.hero-media { position: relative; margin-right: calc(50% - 50vw); }
.hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 55%; }

/* Stats */
.stats { background: var(--ink); color: var(--white); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 32px 24px; border-left: 1px solid rgba(255,255,255,.1); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b { display: block; font: 700 2.4rem/1 "Barlow Condensed", sans-serif; color: var(--straw); }
.stat span { font-size: .92rem; opacity: .75; }

/* Products */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card { background: var(--white); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; box-shadow: 0 1px 0 rgba(0,0,0,.06); }
.card-media { aspect-ratio: 4/5; background: var(--paper-2); display: grid; place-items: center; position: relative; overflow: hidden; }
.card-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.card-media svg { width: 46%; color: var(--green); }
.card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.card-body p { color: var(--muted); font-size: .95rem; }
.spec { margin-top: auto; padding-top: 12px; border-top: 1px dashed var(--straw); font-size: .85rem; font-weight: 600; color: var(--bamboo); }

/* Features */
.features { background: var(--paper-2); }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; background: var(--straw); }
.feature { background: var(--paper-2); padding: 36px; }
.feature .num { font: 700 1rem/1 "Barlow Condensed", sans-serif; color: var(--hivis); letter-spacing: .1em; }
.feature p { color: var(--muted); margin: 0; }

/* Process */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: step; }
.step { padding: 28px 22px 0 0; border-top: 3px solid var(--green); position: relative; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font: 700 3rem/1 "Barlow Condensed", sans-serif;
  color: transparent; -webkit-text-stroke: 1.5px var(--bamboo); margin-bottom: 12px;
}
.step p { color: var(--muted); font-size: .95rem; }
.steps.steps-4 { grid-template-columns: repeat(4, 1fr); }

/* CTA band */
.band { background: var(--hivis); color: #fff; }
.band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-top: 56px; padding-bottom: 56px; }
.band h2 { margin-bottom: .25em; }
.band p { margin: 0; opacity: .92; }
.band .btn { background: var(--ink); color: #fff; flex-shrink: 0; }
.band .btn:hover { background: #000; }

/* Page hero */
.page-hero { position: relative; color: var(--white); background: var(--green); padding: 120px 0 88px; overflow: hidden; }
.page-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .28; }
.page-hero .wrap { position: relative; }
.page-hero .lead { color: rgba(255,253,248,.85); }

/* About */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split img { border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value { border-top: 3px solid var(--hivis); padding-top: 20px; }
.value p { color: var(--muted); }
.gallery { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 12px; }
.gallery img { width: 100%; height: 360px; object-fit: cover; border-radius: var(--radius); }

/* Solutions */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.sol { background: var(--white); padding: 36px; border-radius: var(--radius); border-left: 6px solid var(--green); }
.sol:nth-child(even) { border-left-color: var(--bamboo); }
.sol p { color: var(--muted); margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 12px; }
.chip { padding: 10px 20px; border: 1.5px solid var(--green); border-radius: 999px; font-weight: 600; color: var(--green); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; }
.form { background: var(--white); padding: 40px; border-radius: var(--radius); display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form h2, .form .full { grid-column: 1 / -1; }
.field label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; font: inherit; border: 1.5px solid var(--paper-2);
  border-radius: var(--radius); background: var(--paper);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--green-2); background: #fff; }
.form-note { font-size: .85rem; color: var(--muted); margin: 0; }
.channels { list-style: none; margin: 0; padding: 0; }
.channels li { padding: 18px 0; border-bottom: 1px solid var(--paper-2); }
.channels small { display: block; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.channels a, .channels span { font-weight: 600; font-size: 1.05rem; text-decoration: none; }
.channels a:hover { color: var(--hivis); }

/* Footer */
.site-footer { background: var(--ink); color: rgba(255,253,248,.75); padding: 64px 0 24px; font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; }
.site-footer h4 { color: var(--white); font: 600 .85rem/1 var(--font-body); text-transform: uppercase; letter-spacing: .12em; margin: 0 0 16px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--hivis); }
.footer-bottom { margin-top: 48px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: .85rem; }

/* Responsive */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps, .steps.steps-4 { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; }
  .hero-copy { padding: 64px 0 40px; }
  .hero-media { height: 420px; margin: 0 -24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat, .stat:first-child { padding: 24px 0; border-left: 0; }
  .values, .footer-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .gallery img:first-child { grid-column: 1 / -1; }
  .band .wrap { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .hero-media { margin: 0 -16px; }
  .section { padding: 64px 0; }
  .nav { gap: 12px; }
  .nav .btn-accent { display: none; }
  .nav-toggle { display: block; order: 3; }
  .lang { margin-left: auto; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--green); padding: 8px 16px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .grid-4, .feature-grid, .sol-grid, .form { grid-template-columns: 1fr; }
  .form { padding: 24px; }
  .gallery img { height: 220px; }
}