/* ── RESET & BASE ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:    #2563EB;
  --blue-d:  #1D4ED8;
  --blue-l:  #EFF6FF;
  --dark:    #0F172A;
  --mid:     #334155;
  --muted:   #64748B;
  --light:   #F8FAFC;
  --border:  #E2E8F0;
  --white:   #FFFFFF;
  --accent:  #3B82F6;
  --green:   #10B981;
  --r:       0.75rem;
  --r-lg:    1.25rem;
  --shadow:  0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-l:0 8px 32px rgba(0,0,0,.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans TC', 'Inter', system-ui, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--blue-d); }

.container { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }

/* ── NAV ──────────────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.nav.scrolled { border-color: var(--border); box-shadow: var(--shadow); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: 1160px; margin: 0 auto; padding: 0 1.5rem;
}

.logo { font-size: 1.5rem; font-weight: 700; letter-spacing: -.5px; }
.logo-em { color: var(--blue); }
.logo-pryon { color: var(--dark); }

.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a { font-size: .95rem; font-weight: 500; color: var(--mid); }
.nav-links a:hover { color: var(--blue); }

.btn-nav {
  padding: .45rem 1.1rem; border-radius: var(--r);
  background: var(--blue); color: var(--white) !important;
  font-size: .875rem !important;
}
.btn-nav:hover { background: var(--blue-d) !important; }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--dark); border-radius: 2px; transition: .3s;
}

/* ── BUTTONS ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .75rem 1.75rem; border-radius: var(--r); font-size: 1rem;
  font-weight: 600; cursor: pointer; transition: .2s; border: 2px solid transparent;
}
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-d); color: var(--white); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,.5); }
.btn-outline:hover { background: rgba(255,255,255,.12); color: var(--white); }
.btn-full { width: 100%; }

/* ── HERO ─────────────────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 60%, #1D4ED8 100%);
  overflow: hidden; padding-top: 64px;
}

.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 70% 30%, rgba(59,130,246,.15) 0%, transparent 60%),
    radial-gradient(circle at 20% 80%, rgba(99,102,241,.12) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; padding: 5rem 1.5rem; }

.hero-badge {
  display: inline-block; padding: .3rem .9rem; border-radius: 99px;
  background: rgba(59,130,246,.2); color: #93C5FD;
  font-size: .85rem; font-weight: 500; margin-bottom: 1.5rem;
  border: 1px solid rgba(59,130,246,.3);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700; line-height: 1.15;
  color: var(--white); margin-bottom: 1.25rem;
}
.hero-title .accent { color: #60A5FA; }

.hero-sub {
  font-size: 1.2rem; color: #94A3B8; max-width: 520px;
  margin-bottom: 2.5rem; line-height: 1.8;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 4rem; }

.hero-stats {
  display: flex; gap: 3rem; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.1); padding-top: 2rem;
}
.stat-num { font-size: 2rem; font-weight: 700; color: var(--white); }
.stat-label { font-size: .85rem; color: #94A3B8; margin-top: .25rem; }

/* ── SECTIONS ─────────────────────────────────────────────────────── */
.section { padding: 6rem 0; }
.section-dark { background: var(--dark); }
.section-gray { background: var(--light); }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header.light h2 { color: var(--white); }
.section-header.light .section-sub { color: #94A3B8; }

.section-tag {
  display: inline-block; padding: .25rem .85rem; border-radius: 99px;
  background: var(--blue-l); color: var(--blue);
  font-size: .8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: .05em; margin-bottom: .75rem;
}
.section-dark .section-tag { background: rgba(59,130,246,.15); color: #93C5FD; }

.section-header h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700; margin-bottom: .75rem; }
.section-sub { color: var(--muted); font-size: 1.05rem; }

/* ── CARDS ────────────────────────────────────────────────────────── */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }

.card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 2rem;
  box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-l); }

.card-featured {
  border-color: var(--blue); background: linear-gradient(135deg, #EFF6FF 0%, #fff 60%);
}

.card-icon { font-size: 2rem; margin-bottom: 1rem; }
.card-tag {
  display: inline-block; padding: .2rem .7rem; border-radius: 99px;
  background: var(--blue-l); color: var(--blue);
  font-size: .75rem; font-weight: 600; margin-bottom: .75rem;
}
.card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: .75rem; }
.card p { color: var(--muted); line-height: 1.7; margin-bottom: 1.25rem; }

.card-list { list-style: none; margin-bottom: 1.5rem; }
.card-list li {
  padding: .4rem 0; border-bottom: 1px solid var(--border);
  font-size: .9rem; color: var(--mid);
}
.card-list li:last-child { border-bottom: none; }
.card-list li::before { content: '·  '; color: var(--blue); font-weight: 700; }

.card-cta { font-weight: 600; font-size: .95rem; color: var(--blue); }

/* ── VALUE PROPS ──────────────────────────────────────────────────── */
.props { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 2rem; }

.prop {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r-lg); padding: 1.75rem;
  transition: background .2s;
}
.prop:hover { background: rgba(255,255,255,.08); }
.prop-icon { font-size: 1.75rem; margin-bottom: 1rem; }
.prop h4 { color: var(--white); font-size: 1.05rem; margin-bottom: .5rem; }
.prop p { color: #94A3B8; font-size: .9rem; line-height: 1.6; }

/* ── CASES ────────────────────────────────────────────────────────── */
.cases { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 2rem; }

.case {
  border: 1px solid var(--border); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: var(--shadow);
}
.case-head { padding: 2rem; background: var(--light); }
.case-industry {
  display: inline-block; padding: .2rem .7rem; border-radius: 99px;
  background: var(--blue-l); color: var(--blue);
  font-size: .75rem; font-weight: 600; margin-bottom: .75rem;
}
.case-head h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: .5rem; }
.case-desc { color: var(--muted); font-size: .95rem; }

.case-modules {
  display: flex; flex-wrap: wrap; gap: .5rem;
  padding: 1.25rem 2rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.case-modules span {
  padding: .25rem .75rem; border-radius: 99px;
  background: #F0F9FF; color: #0369A1; font-size: .8rem; font-weight: 500;
}

.case-results { padding: 1.5rem 2rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.result-num { font-size: 1.4rem; font-weight: 700; color: var(--blue); line-height: 1.2; }
.result-label { font-size: .78rem; color: var(--muted); margin-top: .3rem; line-height: 1.4; }

/* ── ABOUT ────────────────────────────────────────────────────────── */
.about-body { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }

.about-text p { color: var(--mid); line-height: 1.8; margin-bottom: 1rem; }
.about-text strong { color: var(--dark); }

.about-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }
.about-tags span {
  padding: .35rem .9rem; border-radius: 99px;
  background: var(--blue-l); color: var(--blue); font-size: .85rem; font-weight: 500;
}

.about-founders { display: flex; flex-direction: column; gap: 1.5rem; }
.founder {
  display: flex; gap: 1.25rem; align-items: flex-start;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 1.5rem; box-shadow: var(--shadow);
}
.founder-avatar {
  width: 56px; height: 56px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue) 0%, #6366F1 100%);
  color: var(--white); font-size: 1.1rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.founder-name { font-weight: 700; font-size: 1.05rem; }
.founder-role { color: var(--blue); font-size: .85rem; margin: .2rem 0; }
.founder-bio { color: var(--muted); font-size: .85rem; line-height: 1.5; }

/* ── CONTACT ──────────────────────────────────────────────────────── */
.contact-wrap { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: start; }

.contact-form { background: var(--light); border-radius: var(--r-lg); padding: 2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.25rem; }
.form-group label { font-size: .875rem; font-weight: 600; color: var(--mid); }

input, select, textarea {
  padding: .7rem 1rem; border: 1.5px solid var(--border);
  border-radius: var(--r); font-size: .95rem; font-family: inherit;
  background: var(--white); color: var(--dark);
  transition: border-color .2s;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--blue); }
textarea { resize: vertical; }

.form-msg { padding: .75rem 1rem; border-radius: var(--r); font-size: .9rem; margin-top: 1rem; }
.form-msg.success { background: #D1FAE5; color: #065F46; }
.form-msg.error   { background: #FEE2E2; color: #991B1B; }

.contact-info { padding: 1rem 0; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; }
.contact-icon { font-size: 1.5rem; }
.contact-label { font-size: .8rem; color: var(--muted); margin-bottom: .2rem; }
.contact-item a, .contact-item div:last-child { font-weight: 500; color: var(--dark); }
.contact-divider { height: 1px; background: var(--border); margin: 1.5rem 0; }
.contact-note { font-size: .9rem; color: var(--muted); line-height: 1.7; }

/* ── FOOTER ───────────────────────────────────────────────────────── */
.footer { background: var(--dark); padding: 3rem 0 1.5rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; flex-wrap: wrap; gap: 1rem; }
.footer .logo { color: var(--white); }
.footer-brand p { color: #64748B; font-size: .875rem; margin-top: .25rem; }
.footer-links { display: flex; gap: 2rem; }
.footer-links a { color: #64748B; font-size: .9rem; transition: color .2s; }
.footer-links a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid #1E293B; padding-top: 1.5rem; text-align: center; }
.footer-bottom p { color: #475569; font-size: .85rem; }

/* ── RESPONSIVE ───────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-body { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--white); padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); gap: 0; }
  .nav-links.open { display: flex; }
  .nav-links li { padding: .6rem 0; border-bottom: 1px solid var(--border); }
  .nav-links li:last-child { border: none; padding-top: .75rem; }
  .btn-nav { display: inline-block; width: fit-content; }
  .hamburger { display: flex; }
  .hero-stats { gap: 2rem; }
  .cases { grid-template-columns: 1fr; }
  .case-results { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr; }
  .props { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .case-results { grid-template-columns: 1fr; }
}