/* Happysaur Studio site. Same palette as the app sites; light-first + dark. */
:root {
  --ink: #10231d; --muted: #52685f; --paper: #f8faf6; --surface: #ffffff;
  --teal: #176f5a; --teal-deep: #0f3f33; --gold: #e4ad3c;
  --line: rgba(16, 35, 29, 0.12);
  --hero-a: #d8f3e7; --hero-b: #dfe8ff; --hero-c: #fff3de;
  --shadow: 0 18px 40px rgba(16, 35, 29, 0.16);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e9f2ec; --muted: #9fb4ab; --paper: #0e1613; --surface: #17221d;
    --teal: #62cfa9; --teal-deep: #bfe9d8; --line: rgba(233, 242, 236, 0.14);
    --hero-a: #14251f; --hero-b: #16202e; --hero-c: #241d12;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); background: var(--paper); line-height: 1.6;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    "PingFang TC", "Hiragino Sans", "Noto Sans TC", "Noto Sans", Arial, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
.inner { max-width: 1040px; margin: 0 auto; padding: 0 clamp(18px, 4vw, 40px); }

.nav {
  position: sticky; top: 0; z-index: 40; display: flex; align-items: center; gap: 18px;
  padding: 10px clamp(16px, 4vw, 36px);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(14px); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 17px; text-decoration: none; }
.brand img { border-radius: 8px; }
.nav-links { display: flex; gap: 16px; margin-left: auto; font-size: 14px; font-weight: 600; flex-wrap: wrap; }
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--ink); }
.nav-links .lang { border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; background: var(--surface); }

.hero { background: linear-gradient(140deg, var(--hero-a) 0%, var(--hero-b) 55%, var(--hero-c) 100%); }
.hrow { display: grid; grid-template-columns: 1fr auto; gap: clamp(20px, 4vw, 56px); align-items: center; padding-top: clamp(40px, 7vw, 84px); padding-bottom: clamp(40px, 7vw, 84px); }
.eyebrow, .label { font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--teal); font-size: 13px; margin: 0 0 10px; }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.15; margin: 0 0 18px; }
.lede { font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); margin: 0 0 18px; max-width: 58ch; }
.mascot { width: min(40vw, 220px); }
@media (max-width: 700px) { .hrow { grid-template-columns: 1fr; } .mascot { margin: 0 auto; } }

.section { padding: clamp(44px, 7vw, 84px) 0; }
.section.alt { background: color-mix(in srgb, var(--surface) 60%, var(--paper)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: clamp(24px, 3.2vw, 36px); line-height: 1.25; margin: 0 0 22px; }

.apps { display: grid; gap: 16px; }
.app { display: grid; grid-template-columns: 96px 1fr; gap: 20px; align-items: start; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 22px; box-shadow: 0 6px 20px rgba(16, 35, 29, 0.06); }
.app img { border-radius: 22px; box-shadow: var(--shadow); }
.kicker { margin: 0 0 2px; font-size: 13px; font-weight: 700; color: var(--teal); }
.app h3 { margin: 0 0 8px; font-size: 22px; }
.app p { margin: 0 0 14px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; gap: 8px; background: #142019; color: #fff; text-decoration: none; border-radius: 12px; padding: 9px 16px; font-weight: 700; font-size: 14px; border: 1px solid rgba(255,255,255,.16); }
@media (prefers-color-scheme: dark) { .btn { background: #223229; } }
.btn svg { width: 18px; height: 18px; }
.btn.ghost { background: transparent; color: var(--teal); border-color: var(--teal); }
@media (max-width: 560px) { .app { grid-template-columns: 72px 1fr; gap: 14px; padding: 16px; } }

.why { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.why li { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; }
.why strong { display: block; font-size: 17px; margin-bottom: 4px; }
.why span { color: var(--muted); }
@media (max-width: 640px) { .why { grid-template-columns: 1fr; } }

.footer { padding: 36px 0 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer p { margin: 0 0 10px; }
.fine { font-size: 12.5px; }