/* Chanma Investment — landing page styles */
:root {
  --font-sans: 'Inter', 'Noto Sans TC', 'Noto Sans SC', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max: 1200px;
  --r: 14px;
  --r-sm: 8px;
  --t: 0.25s cubic-bezier(.4,.0,.2,1);
  --shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.08);
  --shadow-2: 0 10px 40px rgba(0,0,0,.18);
}

[data-theme="dark"] {
  --bg: #0b1220;
  --bg-2: #0f1830;
  --bg-3: #131e3a;
  --surface: #131c33;
  --surface-2: #1a2647;
  --border: #243154;
  --text: #e7ecf6;
  --text-2: #a9b3cc;
  --text-3: #6f7b9a;
  --accent: #f5b301;        /* gold */
  --accent-2: #ffd44d;
  --primary: #4f8cff;
  --primary-2: #7da9ff;
  --danger: #ff6b6b;
  --grid: rgba(255,255,255,.04);
  --topbar-bg: rgba(11,18,32,.78);
  --scrim: rgba(2,6,18,.65);
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-2: #ffffff;
  --bg-3: #eef1f8;
  --surface: #ffffff;
  --surface-2: #f3f5fb;
  --border: #e3e7f1;
  --text: #0d1428;
  --text-2: #43506d;
  --text-3: #7a8499;
  --accent: #c98a00;
  --accent-2: #f5b301;
  --primary: #1f5dd1;
  --primary-2: #4f8cff;
  --danger: #d6453d;
  --grid: rgba(13,20,40,.04);
  --topbar-bg: rgba(255,255,255,.82);
  --scrim: rgba(13,20,40,.45);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body[data-lang="hk"], body[data-lang="tw"] { font-family: 'Noto Sans TC', 'Inter', system-ui, sans-serif; }
body[data-lang="cn"] { font-family: 'Noto Sans SC', 'Inter', system-ui, sans-serif; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* TOPBAR */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px;
  background: var(--topbar-bg);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: .2px;
}
.brand-logo {
  width: 30px; height: 30px; border-radius: 50%;
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.brand-name { font-size: 15px; }
.topbar-actions { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; }

.icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text); transition: background var(--t), transform var(--t);
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn:active { transform: scale(.95); }

/* hamburger */
.hamburger { position: relative; width: 38px; height: 38px; }
.hamburger span {
  position: absolute; left: 9px; right: 9px; height: 2px;
  background: currentColor; border-radius: 2px;
  transition: transform var(--t), opacity var(--t), top var(--t);
}
.hamburger span:nth-child(1) { top: 12px; }
.hamburger span:nth-child(2) { top: 18px; }
.hamburger span:nth-child(3) { top: 24px; }
body.menu-open .hamburger span:nth-child(1) { top: 18px; transform: rotate(45deg); }
body.menu-open .hamburger span:nth-child(2) { opacity: 0; }
body.menu-open .hamburger span:nth-child(3) { top: 18px; transform: rotate(-45deg); }

/* theme toggle */
.theme-toggle .ico { width: 18px; height: 18px; }
[data-theme="dark"] .theme-toggle .ico-sun { display: block; }
[data-theme="dark"] .theme-toggle .ico-moon { display: none; }
[data-theme="light"] .theme-toggle .ico-sun { display: none; }
[data-theme="light"] .theme-toggle .ico-moon { display: block; }

/* flags */
.lang-group { display: inline-flex; gap: 2px; padding: 3px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; }
.flag-btn {
  width: 32px; height: 32px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0;
  transition: background var(--t), transform var(--t);
}
.flag-btn:hover { background: var(--surface-2); }
.flag-btn.active { background: var(--surface-2); box-shadow: inset 0 0 0 2px var(--accent); }
.flag-icon {
  display: block;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  object-fit: cover;
}

/* SIDE NAV */
.sidenav {
  position: fixed; top: 0; left: 0; bottom: 0; width: 320px; max-width: 84vw;
  background: var(--bg-2); border-right: 1px solid var(--border);
  z-index: 110; padding: 84px 18px 24px; overflow-y: auto;
  transform: translateX(-105%); transition: transform .35s cubic-bezier(.6,.05,.2,1);
  display: flex; flex-direction: column;
}
.sidenav ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.sidenav li a {
  display: block; padding: 14px 16px; border-radius: var(--r-sm);
  color: var(--text); font-weight: 500;
  transition: background var(--t), color var(--t), transform var(--t);
}
.sidenav li a:hover { background: var(--surface); color: var(--accent); transform: translateX(2px); }
.sidenav-footer {
  margin-top: auto; padding-top: 18px; border-top: 1px solid var(--border);
  font-size: 13px; color: var(--text-3); display: flex; gap: 8px; justify-content: center;
}
.sidenav-footer a:hover { color: var(--accent); }
body.menu-open .sidenav { transform: translateX(0); }
body.menu-open .scrim { opacity: 1; pointer-events: auto; }

.scrim {
  position: fixed; inset: 0; background: var(--scrim); opacity: 0; pointer-events: none;
  z-index: 105; transition: opacity .3s;
}

/* SECTIONS */
.section { position: relative; padding: 120px 0; scroll-margin-top: 84px; }
.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); margin: 0 0 14px; letter-spacing: -.02em; }
.section-sub { color: var(--text-2); font-size: 17px; margin: 0; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .14em; font-size: 12px; font-weight: 700;
  color: var(--accent); margin: 0 0 12px;
}

/* HERO */
.hero { padding: 140px 0 100px; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(900px 500px at 80% 10%, rgba(245,179,1,.18), transparent 60%),
    radial-gradient(700px 400px at 10% 90%, rgba(79,140,255,.18), transparent 60%),
    linear-gradient(transparent 95%, var(--grid) 95%) 0 0/40px 40px,
    linear-gradient(90deg, transparent 95%, var(--grid) 95%) 0 0/40px 40px;
}
.hero-grid {
  position: relative; display: grid; grid-template-columns: minmax(220px, 320px) 1fr;
  gap: 56px; align-items: center;
}
.hero-photo { position: relative; justify-self: center; }
.hero-photo img {
  width: 280px; height: 280px; border-radius: 50%; object-fit: cover;
  box-shadow: var(--shadow-2);
  border: 4px solid var(--bg-2);
}
.hero-photo-ring {
  position: absolute; inset: -10px; border-radius: 50%;
  border: 2px dashed var(--accent); animation: spin 30s linear infinite;
  opacity: .5;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hero-text h1 {
  font-size: clamp(32px, 5vw, 56px); line-height: 1.08; margin: 0 0 18px;
  letter-spacing: -.025em;
}
.hero-text .accent { color: var(--accent); }
.lede { color: var(--text-2); font-size: 18px; max-width: 620px; margin: 0 0 28px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px; font-weight: 600; font-size: 15px;
  transition: transform var(--t), background var(--t), border-color var(--t), color var(--t), box-shadow var(--t);
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #1a1300; }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(245,179,1,.3); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-stats {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 36px; flex-wrap: wrap;
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 28px; color: var(--accent); line-height: 1; }
.hero-stats span { font-size: 13px; color: var(--text-3); margin-top: 4px; }

.scroll-cue {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  color: var(--text-3); font-size: 12px; text-transform: uppercase; letter-spacing: .2em;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  animation: bounce 2.4s ease-in-out infinite;
}
@keyframes bounce { 0%,100% { transform: translate(-50%,0);} 50% { transform: translate(-50%, 6px);} }

/* PROJECT scrollytelling */
.project { padding: 80px 0; }
.project.alt { background: var(--bg-2); }
.scroll-stage {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px;
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  align-items: start;
}
.scroll-stage.reverse { direction: rtl; }
.scroll-stage.reverse > * { direction: ltr; }

.sticky-visual {
  position: sticky; top: 100px; align-self: start;
  height: calc(100vh - 140px); display: flex; align-items: center; justify-content: center;
}

.device-frame {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow-2);
  width: 100%; transition: transform var(--t), box-shadow var(--t);
}
.device-frame:hover { transform: translateY(-4px); box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.device-bar {
  height: 30px; background: var(--surface-2); display: flex; align-items: center; gap: 6px; padding: 0 12px;
  border-bottom: 1px solid var(--border);
}
.device-bar span {
  width: 10px; height: 10px; border-radius: 50%; background: var(--text-3); opacity: .5;
}
.device-bar span:nth-child(1) { background: #ff5f57; opacity: 1; }
.device-bar span:nth-child(2) { background: #febc2e; opacity: 1; }
.device-bar span:nth-child(3) { background: #28c840; opacity: 1; }
.device-frame img { width: 100%; display: block; }

.scroll-steps { display: flex; flex-direction: column; gap: 26vh; padding: 12vh 0 18vh; }
.step {
  opacity: .65; transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: var(--r);
  background: var(--surface);
  padding: 28px;
}
.step.active { opacity: 1; transform: translateY(0); border-left-color: var(--accent); }
.step h2 { font-size: clamp(28px, 3.6vw, 40px); margin: 8px 0 14px; letter-spacing: -.02em; }
.step h2 .accent { color: var(--accent); }
.step h3 { font-size: 22px; margin: 4px 0 10px; }
.step p + h3 { margin-top: 24px; }
.step p { color: var(--text-2); margin: 0; font-size: 16px; }
.step-tag {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  background: rgba(245,179,1,.15); color: var(--accent); border: 1px solid rgba(245,179,1,.35);
}
.step-tag.warn {
  background: rgba(255,107,107,.12); color: var(--danger); border-color: rgba(255,107,107,.35);
}
.step-cta { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 12px; }

/* MORE LIVE PROJECTS */
.more-projects { background: var(--bg); }
.showcase-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.showcase-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  overflow: hidden; transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.showcase-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-2); }
.showcase-card-media {
  aspect-ratio: 16 / 9; background: #05070d; border-bottom: 1px solid var(--border); overflow: hidden;
}
.showcase-card-media img { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.bloomberg-media img { object-position: center top; }
.wyandanch-media img,
.reading-media img,
.paper-media img,
.gold-media img { object-position: center center; }
.showcase-card-body { padding: 26px; }
.project-kicker {
  display: inline-block; margin-bottom: 12px; color: var(--accent); font-size: 11px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase;
}
.showcase-card h3 { margin: 0 0 10px; font-size: 24px; letter-spacing: -.01em; }
.showcase-card p { color: var(--text-2); margin: 0; font-size: 15px; }
.showcase-card-actions { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 12px; }

/* PIPELINE */
.pipeline { background: var(--bg); }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.proj-card {
  position: relative;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  padding: 28px; transition: transform var(--t), border-color var(--t);
}
.proj-card.disabled { opacity: .82; }
.proj-card.disabled::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--r);
  background: repeating-linear-gradient(45deg, transparent 0 12px, rgba(255,255,255,.02) 12px 14px);
  pointer-events: none;
}
.proj-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.proj-card-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(245,179,1,.12); color: var(--accent); margin-bottom: 16px;
}
.proj-card-icon svg { width: 22px; height: 22px; }
.proj-card h3 { margin: 8px 0 10px; font-size: 20px; }
.proj-card p { color: var(--text-2); margin: 0; font-size: 15px; }
.badge {
  position: absolute; top: 16px; right: 16px;
  padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 700;
  background: var(--surface-2); color: var(--text-3); border: 1px solid var(--border);
  text-transform: uppercase; letter-spacing: .12em;
}
.badge-pipeline { color: var(--accent); border-color: rgba(245,179,1,.35); }
.proj-card-link {
  display: inline-block; margin-top: 18px; color: var(--accent); font-weight: 600; font-size: 14px;
}
.proj-card-link:hover { color: var(--accent-2); }

/* SUPPORT */
.support { background: var(--bg-2); }
.link-card {
  display: block; position: relative; padding: 32px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.link-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.link-card.substack { border-top: 4px solid #ff6719; }
.link-card.substack:hover { border-color: #ff6719; }
.link-card.patreon  { border-top: 4px solid #ff424d; }
.link-card.patreon:hover { border-color: #ff424d; }
.link-card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2); margin-bottom: 18px; color: var(--accent);
}
.link-card.substack .link-card-icon { color: #ff6719; }
.link-card.patreon  .link-card-icon { color: #ff424d; }
.link-card-icon svg { width: 24px; height: 24px; }
.link-card h3 { margin: 0 0 10px; font-size: 22px; }
.link-card p { color: var(--text-2); margin: 0 0 16px; font-size: 15px; }
.link-card-cta { color: var(--accent); font-weight: 600; font-size: 14px; }

/* CONTACT */
.contact { background: var(--bg); padding-bottom: 0; }
.contact-grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px;
  padding-bottom: 80px;
}
.contact h2 { font-size: clamp(28px, 4vw, 40px); margin: 0 0 16px; letter-spacing: -.02em; }
.contact p { color: var(--text-2); font-size: 17px; max-width: 520px; }
.contact-links {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px;
}
.contact-links a {
  padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px;
  font-size: 14px; transition: background var(--t), color var(--t), border-color var(--t);
}
.contact-links a:hover { background: var(--accent); color: #1a1300; border-color: var(--accent); }

.contact-social {
  margin-top: 18px;
  color: var(--text-2);
  font-size: 15px;
}

.contact-social a {
  color: var(--text);
  transition: color var(--t);
}

.contact-social a:hover {
  color: var(--accent);
}

.disclaimer {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px; align-self: start;
}
.disclaimer h3 { margin: 0 0 8px; font-size: 14px; text-transform: uppercase; letter-spacing: .14em; color: var(--text-3); }
.disclaimer p { color: var(--text-2); font-size: 13px; margin: 0; line-height: 1.6; }

.footer {
  border-top: 1px solid var(--border);
  padding: 22px 24px; max-width: var(--max); margin: 0 auto;
  display: flex; align-items: center; gap: 12px;
  font-size: 13px; color: var(--text-3);
}
.footer-spacer { flex: 1; }

/* RESPONSIVE */
/* Screenshot-only navigation keeps every project visible in the left rail. */
main { margin-left: 112px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.repo-map {
  position: fixed; z-index: 90; left: 16px; top: 50%;
  transform: translateY(-50%); width: 80px;
  padding: 6px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--topbar-bg); backdrop-filter: blur(12px);
}
.repo-map-track { position: relative; display: flex; flex-direction: column; gap: 5px; }
.repo-map-link {
  position: relative; display: block; width: 100%;
  height: clamp(12px, calc((100dvh - 200px) / 12), 42px);
  border-radius: 3px; outline: 1px solid var(--border);
  transition: outline-color var(--t), opacity var(--t);
}
.repo-map-link img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
.repo-map-link.is-current { outline: 2px solid var(--accent); }
.repo-map-link:hover, .repo-map-link:focus-visible { outline: 2px solid var(--primary); z-index: 2; }
.repo-map-tooltip {
  display: none; position: absolute; left: calc(100% + 16px); top: 50%;
  transform: translateY(-50%); width: max-content; max-width: min(340px, 70vw);
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg-2); color: var(--text); font-size: 12px;
  box-shadow: var(--shadow-1); pointer-events: none;
}
.repo-map-link:hover .repo-map-tooltip, .repo-map-link:focus-visible .repo-map-tooltip { display: block; }
.repo-map-window {
  position: absolute; left: -4px; right: -4px; pointer-events: none;
  border: 2px solid var(--accent); border-radius: 4px;
  background: rgba(245, 179, 1, .12); box-shadow: 0 0 8px rgba(245, 179, 1, .18);
}
.repo-map-window::before {
  content: ''; position: absolute; left: -7px; top: 50%; transform: translateY(-50%);
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
}
.project-visual { height: auto; max-height: calc(100dvh - 190px); object-fit: contain; background: var(--bg-2); }
.pipeline .card-grid { max-width: 650px; margin: 0 auto; grid-template-columns: 1fr; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 32px; }
  .hero-photo img { width: 200px; height: 200px; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  main { margin-left: 60px; }
  .repo-map { left: 10px; width: 42px; padding: 3px; }
  .repo-map-track { gap: 4px; }
  .repo-map-link { height: clamp(12px, calc((100dvh - 180px) / 12), 28px); }
  .scroll-stage { display: block; }
  .scroll-stage.reverse { direction: ltr; }
  .sticky-visual { position: sticky; top: 76px; height: auto; z-index: 5; padding-bottom: 16px; }
  .project-visual { max-height: 30dvh; width: 100%; object-fit: contain; }
  .scroll-steps { gap: 40px; padding: 24px 0 0; }
  .step { opacity: 1; transform: none; padding: 22px; min-height: 36dvh; }
  .showcase-grid { grid-template-columns: 1fr; }
  .card-grid, .card-grid.two { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 48px; }
  .section { padding: 80px 0; }
  .brand-name { display: none; }
}

@media (max-width: 480px) {
  main { margin-left: 46px; }
  .repo-map { left: 5px; width: 34px; }
  .container, .scroll-stage { padding: 0 16px; }
  .hero-photo img { width: 150px; height: 150px; }
  .step { padding: 18px; }
  .step h2 { font-size: 26px; }
  .step h3 { font-size: 20px; }
  .step-cta { flex-direction: column; align-items: start; }
  .btn { padding: 10px 16px; font-size: 14px; }
  .topbar { padding: 10px 12px; gap: 8px; }
  .lang-group { padding: 2px; }
  .flag-btn { width: 28px; height: 28px; }
  .flag-icon { width: 16px; height: 16px; }
  .hero-text h1 { font-size: 32px; }
  .hero-stats { gap: 20px; }
  .hero-stats strong { font-size: 22px; }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}