/* =========================================================
   FrenzyVision 狂熱視野 — 樣式表
   風格：街頭潮流 × 質感　主色：正黑 #0a0a0a + 正黃 #FFD500
   ========================================================= */

:root {
  --black: #0a0a0a;
  --ink: #161616;
  --yellow: #ffd500;
  --yellow-deep: #f2c200;
  --paper: #ffffff;
  --soft: #f4f4f2;
  --line: #e4e4e0;
  --muted: #8a8a86;
  --muted-dark: #9a9a93;

  --maxw: 1180px;
  --radius: 14px;
  --shadow: 0 18px 40px -18px rgba(0, 0, 0, .35);

  --font-display: 'Anton', 'Noto Sans TC', sans-serif;
  --font-body: 'Noto Sans TC', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 共用標題 ---------- */
.eyebrow {
  font-family: var(--font-display);
  letter-spacing: .22em;
  font-size: .82rem;
  color: var(--yellow-deep);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-dark .eyebrow { color: var(--yellow); }

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: .02em;
}
.section-title .hl { color: var(--yellow-deep); }
.section-dark .section-title .hl { color: var(--yellow); }

.section-desc { color: var(--muted); max-width: 560px; margin-top: 16px; }
.section-dark .section-desc { color: var(--muted-dark); }
.section-desc code {
  background: rgba(0,0,0,.06); padding: 2px 7px; border-radius: 6px;
  font-size: .9em;
}
.section-desc a {
  color: var(--yellow-deep); font-weight: 700;
  border-bottom: 2px solid var(--yellow); padding-bottom: 1px;
}
.section-desc a:hover { color: var(--ink); }

.section { padding: clamp(64px, 9vw, 120px) 0; }
.section-head { margin-bottom: 54px; }
.section-soft { background: var(--soft); }
.section-dark { background: var(--black); color: #fff; }

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1rem;
  padding: 14px 28px; border-radius: 999px;
  border: 2px solid transparent;
  transition: transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: .9rem; }

.btn-yellow { background: var(--yellow); color: var(--black); box-shadow: 0 10px 24px -10px rgba(255,213,0,.8); }
.btn-yellow:hover { background: #ffe23d; }

.btn-outline { border-color: currentColor; color: #fff; }
.section-dark .btn-outline:hover, .hero .btn-outline:hover { background: #fff; color: var(--black); border-color: #fff; }

.btn-dark { background: var(--black); color: #fff; }
.btn-dark:hover { background: #2a2a2a; }

/* ====================== 導覽列 ====================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 10, 10, .82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { background: rgba(10,10,10,.96); box-shadow: 0 8px 30px -12px rgba(0,0,0,.6); }

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 9px;
  background: var(--yellow); color: var(--black);
  font-family: var(--font-display); font-size: 1.25rem; letter-spacing: .02em;
}
.brand-name {
  font-family: var(--font-display); color: #fff;
  font-size: 1.15rem; letter-spacing: .12em;
}
.brand-name span { color: var(--yellow); }

.nav { display: flex; align-items: center; gap: 28px; }
.nav > a { color: rgba(255,255,255,.82); font-size: .95rem; font-weight: 500; transition: color .15s ease; }
.nav > a:hover { color: var(--yellow); }
.nav .nav-cta { color: var(--black); }
.nav .nav-cta:hover { color: var(--black); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 6px; cursor: pointer; }
.nav-toggle span { width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ====================== HERO ====================== */
.hero {
  position: relative;
  background: radial-gradient(1200px 600px at 80% -10%, #1d1d1d 0%, var(--black) 55%);
  color: #fff;
  padding: 150px 0 90px;
  overflow: hidden;
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,213,0,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,213,0,.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(900px 500px at 70% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(900px 500px at 70% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; }

.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.8rem, 9vw, 6rem);
  line-height: .98;
  letter-spacing: .01em;
  margin: 8px 0 22px;
}
.hero-title .hl {
  color: var(--black);
  background: var(--yellow);
  padding: 0 .18em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.hero-sub { font-size: clamp(1rem, 1.6vw, 1.18rem); color: rgba(255,255,255,.82); max-width: 620px; }
.hero-sub strong { color: #fff; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 40px; }

.hero-badges { display: flex; flex-wrap: wrap; gap: 14px 34px; list-style: none; }
.hero-badges li { color: rgba(255,255,255,.7); font-size: .95rem; }
.hero-badges span {
  display: block; font-family: var(--font-display);
  font-size: 1.7rem; color: var(--yellow); letter-spacing: .03em;
}

/* ====================== 數據條 ====================== */
.stats { background: var(--yellow); }
.stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; padding: 30px 12px; border-right: 1px solid rgba(0,0,0,.12); }
.stat:last-child { border-right: 0; }
.stat-num { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.8rem); color: var(--black); line-height: 1; }
.stat-num small { font-size: .5em; }
.stat-label { font-weight: 700; color: rgba(0,0,0,.7); margin-top: 6px; font-size: .92rem; }

/* ====================== 商品系列 ====================== */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  display: flex; flex-direction: column;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--yellow); }

.cat-thumb {
  aspect-ratio: 16 / 10;
  background:
    repeating-linear-gradient(45deg, #141414 0 14px, #1c1c1c 14px 28px);
  position: relative;
}
.cat-thumb::after {
  content: attr(data-label);
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--font-display); font-size: 1.4rem; letter-spacing: .08em;
  color: var(--yellow);
}
.cat-body { padding: 22px 22px 24px; }
.cat-body h3 { font-size: 1.25rem; margin-bottom: 6px; }
.cat-body p { color: var(--muted); font-size: .95rem; min-height: 2.6em; }
.cat-link { display: inline-block; margin-top: 12px; font-weight: 700; color: var(--yellow-deep); }
.cat-card:hover .cat-link { color: var(--black); }

/* ====================== 為什麼選我們 ====================== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); overflow: hidden; }
.feature { background: var(--black); padding: 36px 30px; transition: background .2s ease; }
.feature:hover { background: #161616; }
.feature-ico { font-family: var(--font-display); font-size: 1.4rem; color: var(--yellow); margin-bottom: 14px; }
.feature h3 { font-size: 1.2rem; margin-bottom: 10px; }
.feature p { color: var(--muted-dark); font-size: .95rem; }

/* ====================== 客製流程 ====================== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { position: relative; padding-top: 14px; }
.step-num {
  font-family: var(--font-display); font-size: 2.4rem;
  width: 64px; height: 64px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--yellow); color: var(--black);
  margin-bottom: 18px;
}
.step h3 { font-size: 1.18rem; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: .95rem; }
.process-cta { margin-top: 48px; }

/* ====================== 作品集 ====================== */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery-item {
  aspect-ratio: 1 / 1; border-radius: 12px; overflow: hidden;
  background: repeating-linear-gradient(135deg, #e9e9e6 0 16px, #f3f3f0 16px 32px);
  position: relative; transition: transform .2s ease;
}
.gallery-item:hover { transform: scale(1.02); }
.gallery-item::after {
  content: attr(data-label);
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--font-display); color: #b7b7b1; letter-spacing: .08em;
}
.gallery-grid img { width: 100%; height: 100%; object-fit: cover; }

/* ====================== 聯絡 ====================== */
.contact-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.contact-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 26px; }
.contact-links { display: flex; flex-wrap: wrap; gap: 22px; list-style: none; }
.contact-links a { color: rgba(255,255,255,.75); border-bottom: 1px solid transparent; padding-bottom: 2px; transition: .15s; }
.contact-links a:hover { color: var(--yellow); border-color: var(--yellow); }

.contact-qr { text-align: center; }
.qr-box {
  width: 200px; max-width: 100%; aspect-ratio: 1; margin: 0 auto 14px;
  border-radius: 16px; background: #fff;
  display: grid; place-items: center;
}
.qr-box::after { content: attr(data-label); font-family: var(--font-display); color: #c7c7c2; letter-spacing: .06em; }
.contact-qr p { color: var(--muted-dark); font-size: .92rem; }

/* ====================== 頁尾 ====================== */
.site-footer { background: #060606; color: #fff; padding: 44px 0; border-top: 1px solid rgba(255,255,255,.08); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand strong { font-size: 1.05rem; }
.footer-brand p { color: var(--muted-dark); font-size: .88rem; }
.footer-meta { text-align: right; color: var(--muted-dark); font-size: .85rem; }
.footer-meta p + p { margin-top: 4px; }

/* ====================== 進場動畫 ====================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ====================== 響應式 ====================== */
.mobile-br { display: none; }

@media (max-width: 960px) {
  .cat-grid, .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-inner { grid-template-columns: 1fr; }
  .contact-qr { order: -1; }
}

@media (max-width: 720px) {
  .nav {
    position: fixed; inset: 68px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(10,10,10,.98); padding: 10px 0 18px;
    border-bottom: 1px solid rgba(255,255,255,.1);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: .22s ease;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav > a { padding: 14px 24px; border-bottom: 1px solid rgba(255,255,255,.06); }
  .nav .nav-cta { margin: 12px 24px 0; }
  .nav-toggle { display: flex; }

  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid rgba(0,0,0,.12); }

  .cat-grid, .feature-grid, .steps { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .mobile-br { display: inline; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}