/* ============================================================
   中食锁鲜菜园 — 中国名厨菜 · 锁鲜全球达
   Design system: warm paper + ink navy + cinnabar red + gold
   ============================================================ */

:root {
  --ink: #1d2530;
  --ink-2: #39434f;
  --ink-3: #6a7180;
  --paper: #faf8f4;
  --surface: #ffffff;
  --tint: #f3efe7;
  --line: #e6e1d5;
  --line-2: #d8d2c2;
  --red: #b5342a;
  --red-deep: #922a21;
  --red-tint: #f7e9e6;
  --gold: #b98a44;
  --gold-tint: #f4ecdd;
  --green: #3e6b4f;
  --dark-text: #ece7da;
  --dark-text-2: #a8a396;
  --shadow: 0 14px 40px rgba(29, 37, 48, 0.09);
  --radius: 10px;
  --radius-sm: 7px;
  --font-display: "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Segoe UI", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img, svg { vertical-align: middle; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  clip: rect(0 0 0 0); clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

/* honeypot field — visually hidden and untabbable, only bots see it */
.hp-field {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- typography ---------- */

h1, h2, h3, h4 { line-height: 1.22; font-weight: 700; letter-spacing: -0.01em; }

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.2vw, 4rem);
  font-weight: 700;
  letter-spacing: 0;
  margin: 14px 0 6px;
}
h1 em { font-style: normal; color: var(--red); }

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  margin-top: 10px;
}
.h2-cn { font-size: 0.55em; color: var(--ink-3); font-weight: 400; margin-left: 14px; }

.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--red);
  flex: none;
}
.eyebrow-gold { color: var(--gold); }
.eyebrow-gold::before { background: var(--gold); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: 600 0.92rem/1 var(--font-body);
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn-sm { padding: 10px 16px; font-size: 0.84rem; }
.btn-block { width: 100%; }

.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-deep); transform: translateY(-1px); }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-1px); }

.btn:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 24px rgba(29,37,48,0.05); }

.nav-inner { display: flex; align-items: center; gap: 36px; height: 74px; }

.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; flex: none; }
.brand-seal {
  width: 42px; height: 42px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  border-radius: 9px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.28);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1.12rem; letter-spacing: 0.1em; font-weight: 700; }
.brand-text small { font-size: 0.66rem; color: var(--ink-3); letter-spacing: 0.14em; }

.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.15s ease;
}
.nav-links a span { display: block; font-size: 0.62rem; font-weight: 400; color: var(--ink-3); letter-spacing: 0.08em; }
.nav-links a:hover { color: var(--red); }

.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.nav-links + .nav-actions { margin-left: 0; }

.inquiry-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font: 600 0.84rem var(--font-body);
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.inquiry-chip:hover { border-color: var(--ink); }
.inquiry-count {
  position: absolute;
  top: -7px; right: -7px;
  min-width: 19px; height: 19px;
  background: var(--red);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  border-radius: 999px;
  display: grid;
  place-items: center;
  padding: 0 5px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4.5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: all 0.2s ease; }

/* ---------- hero ---------- */

.hero { padding: 84px 0 40px; overflow: hidden; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-cn {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--gold);
  letter-spacing: 0.28em;
  margin: 10px 0 18px;
}

.hero-sub { font-size: 1.05rem; color: var(--ink-2); max-width: 54ch; }

.hero-cta { display: flex; gap: 14px; margin: 30px 0 18px; flex-wrap: wrap; }

.hero-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--ink-3);
}
.hero-note svg { color: var(--green); }

/* hero visual: real-dish photo mosaic with brand chip */
.hero-visual { position: relative; display: flex; justify-content: center; }

.hero-card {
  width: min(380px, 100%);
  aspect-ratio: 4 / 4.6;
  background: var(--ink);
  border-radius: 16px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.hero-mosaic {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 3px;
  background: var(--ink);
}
.hero-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.14) contrast(1.06);
}

.hero-card-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(20, 24, 32, 0.62) 0%, rgba(20, 24, 32, 0.08) 34%, transparent 55%),
    radial-gradient(120% 70% at 85% 0%, rgba(181, 52, 42, 0.18), transparent 55%);
  pointer-events: none;
}

.hero-brand-chip {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px 9px 10px;
  border-radius: 999px;
  background: rgba(20, 24, 32, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(236, 231, 218, 0.22);
}
.hero-brand-seal {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 30px;
  text-align: center;
  flex: none;
}
.hero-brand-name {
  color: var(--dark-text);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.hero-float {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-2);
  box-shadow: 0 10px 28px rgba(29,37,48,0.12);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.dot-gold { background: var(--gold); }
.dot-red { background: var(--red); }
.dot-ink { background: var(--ink-2); }
.hero-float-a { top: 12%; left: 2%; }
.hero-float-b { top: 46%; right: 0; }
.hero-float-c { bottom: 7%; left: 8%; }

/* hero stats */
.hero-stats {
  margin-top: 64px;
  padding: 26px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat { display: flex; align-items: center; gap: 16px; }
.stat strong {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--red);
}
.stat span { font-size: 0.8rem; color: var(--ink-3); line-height: 1.45; }

/* ---------- sections ---------- */

.section { padding: clamp(70px, 9vw, 116px) 0; }

.section-tint { background: var(--tint); }

.section-dark {
  background:
    radial-gradient(90% 70% at 85% 15%, rgba(181,52,42,0.22), transparent 55%),
    var(--ink);
  color: var(--dark-text);
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 54px;
}
.section-desc { font-size: 0.95rem; color: var(--ink-3); }
.section-desc-dark { color: var(--dark-text-2); }
.section-head-dark h2 { color: #fff; }
.section-head-dark .h2-cn { color: var(--dark-text-2); }

/* ---------- flagship products ---------- */

.flagship {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  margin-bottom: 70px;
}
.product-card { grid-column: span 2; }
.product-card.wide { grid-column: span 4; }

.product-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--line-2);
}

.product-art {
  aspect-ratio: 16 / 9.5;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

/* category-tinted art backgrounds (fallback when a photo is missing) */
.art-meals      { background: radial-gradient(130% 110% at 18% 0%, #cf5a40 0%, #7e2a1e 90%); }
.art-dimsum     { background: radial-gradient(130% 110% at 18% 0%, #dfa85a 0%, #93601f 90%); }
.art-seafood    { background: radial-gradient(130% 110% at 18% 0%, #62879a 0%, #2c4653 90%); }
.art-meat       { background: radial-gradient(130% 110% at 18% 0%, #c06a4b 0%, #6a3320 90%); }
.art-fruit      { background: radial-gradient(130% 110% at 18% 0%, #d4ae4a 0%, #85660f 90%); }
.art-hotpot     { background: radial-gradient(130% 110% at 18% 0%, #bd3a2b 0%, #6b1a10 90%); }
.art-seasonings { background: radial-gradient(130% 110% at 18% 0%, #b3743a 0%, #68400f 90%); }
.art-specialty  { background: radial-gradient(130% 110% at 18% 0%, #4e7d5f 0%, #24422f 90%); }

.product-art-img, .modal-art-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* appetizing food-photography treatment */
.product-art-img, .modal-art-img { filter: saturate(1.12) contrast(1.05); }
.product-art::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(29,37,48,0) 58%, rgba(29,37,48,0.32) 100%);
  pointer-events: none;
}
.product-art-cat { z-index: 2; }
.product-card:hover .product-art-img { transform: scale(1.05); }
.product-art-img { transition: transform 0.35s ease; }

.catalog-count { font-size: 0.8rem; color: var(--ink-3); margin-top: 4px; }
.chip-n { opacity: 0.5; font-size: 0.78em; margin-left: 3px; }
.product-art-char {
  font-family: var(--font-display);
  font-size: 4.6rem;
  color: rgba(255,255,255,0.94);
  text-shadow: 0 10px 26px rgba(0,0,0,0.22);
  line-height: 1;
}
.product-card.wide .product-art-char { font-size: 6.4rem; }
.product-art-cat {
  position: absolute;
  top: 12px; left: 12px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.92);
  background: rgba(29,37,48,0.35);
  backdrop-filter: blur(4px);
  padding: 5px 10px;
  border-radius: 999px;
}

.product-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product-title { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.product-title h3 { font-size: 1.06rem; }
.product-title .cn { font-family: var(--font-display); font-size: 0.95rem; color: var(--ink-3); white-space: nowrap; }

.product-meta { font-size: 0.8rem; color: var(--ink-3); }
.product-meta strong { color: var(--ink-2); font-weight: 600; }

.product-specs {
  display: flex;
  gap: 18px;
  font-size: 0.8rem;
  color: var(--ink-2);
  margin-top: 2px;
}
.product-specs b { display: block; font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; }

.product-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }

.badge {
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
}
.badge-gold { background: var(--gold-tint); border-color: transparent; color: #8a6328; }
.badge-red { background: var(--red-tint); border-color: transparent; color: var(--red-deep); }

.product-actions { display: flex; gap: 8px; margin-top: auto; padding-top: 12px; }
.product-actions .btn { flex: 1; }

/* ---------- catalog ---------- */

.catalog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding-top: 54px;
  border-top: 1px solid var(--line);
}
.catalog-head h3 { font-family: var(--font-display); font-size: 1.5rem; }
.catalog-head h3 span { font-size: 0.9rem; color: var(--ink-3); font-family: var(--font-body); font-weight: 400; margin-left: 10px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-chip {
  font: 600 0.8rem var(--font-body);
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 8px 15px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.filter-chip:hover { border-color: var(--ink); }
.filter-chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }

.catalog {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.catalog .product-card { grid-column: auto; }
.catalog .product-card.wide { grid-column: auto; }

.catalog-empty {
  text-align: center;
  color: var(--ink-3);
  padding: 48px 0;
  font-size: 0.95rem;
}

/* ---------- fresh-lock (dark) ---------- */

.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.metric {
  border: 1px solid rgba(236,231,218,0.16);
  border-radius: var(--radius);
  padding: 30px 28px;
  background: rgba(255,255,255,0.03);
}
.metric strong {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--gold);
  display: block;
  line-height: 1.1;
}
.metric span { display: block; margin: 10px 0 14px; font-size: 0.9rem; color: var(--dark-text); }
.metric em {
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark-text-2);
  border-top: 1px dashed rgba(236,231,218,0.25);
  padding-top: 10px;
  display: inline-block;
}
.metrics-note { margin: 18px 0 60px; font-size: 0.78rem; color: var(--dark-text-2); }

.tech-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tech-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.tech-step span {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--gold);
  border: 1px solid rgba(185,138,68,0.4);
  border-radius: 999px;
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  flex: none;
}
.tech-step h4 { font-size: 0.95rem; color: #fff; margin-bottom: 5px; }
.tech-step p { font-size: 0.82rem; color: var(--dark-text-2); }

/* ---------- how it works ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  list-style: none;
  counter-reset: step;
}
.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
}
.step-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--red);
  display: block;
  margin-bottom: 12px;
}
.step h3 { font-size: 1.02rem; margin-bottom: 8px; }
.step p { font-size: 0.85rem; color: var(--ink-3); }
.step-cn {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

/* ---------- AI assistant ---------- */

.ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }

.ai-copy h2 { margin-bottom: 18px; }
.ai-copy > p { color: var(--ink-2); font-size: 0.97rem; }

.ai-points { list-style: none; margin: 22px 0; }
.ai-points li {
  position: relative;
  padding-left: 24px;
  font-size: 0.9rem;
  color: var(--ink-2);
  margin-bottom: 9px;
}
.ai-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--gold-tint);
  border: 3px solid var(--gold);
  box-sizing: border-box;
}
.ai-note { font-size: 0.78rem; color: var(--ink-3); }

.ai-window {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.ai-window-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.ai-window-head strong { font-size: 0.9rem; display: block; }
.ai-window-head small { font-size: 0.7rem; color: var(--ink-3); letter-spacing: 0.08em; }
.ai-window-head .btn { margin-left: auto; }
.ai-avatar {
  width: 34px; height: 34px;
  background: var(--red);
  color: #fff;
  border-radius: 8px;
  font-family: var(--font-display);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  flex: none;
}

.ai-messages {
  height: 380px;
  overflow-y: auto;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background:
    repeating-linear-gradient(45deg, rgba(29,37,48,0.014) 0 1px, transparent 1px 16px);
}

.msg { max-width: 86%; font-size: 0.86rem; line-height: 1.55; }
.msg-user {
  align-self: flex-end;
  background: var(--ink);
  color: #fff;
  padding: 11px 15px;
  border-radius: 12px 12px 3px 12px;
}
.msg-ai { align-self: flex-start; color: var(--ink-2); }
.msg-ai .msg-inner {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 11px 15px;
  border-radius: 12px 12px 12px 3px;
}
.msg-status {
  font-size: 0.76rem;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 2px 4px;
}
.msg-status svg { color: var(--green); flex: none; }

.ai-card {
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 14px;
  margin-top: 10px;
}
.ai-card h5 {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 10px;
}
.ai-card-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.82rem;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
}
.ai-card-row:last-child { border-bottom: none; }
.ai-card-row b { font-weight: 600; color: var(--ink); }
.ai-card-row span { color: var(--ink-3); text-align: right; }
.ai-card-foot { font-size: 0.76rem; color: var(--green); margin-top: 10px; display: flex; gap: 7px; align-items: center; }

.typing { display: inline-flex; gap: 4px; padding: 10px 14px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px 12px 12px 3px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: 0.2s; }
.typing i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 70%, 100% { opacity: 0.25; } 35% { opacity: 1; } }

.ai-input { display: flex; gap: 10px; padding: 14px 16px; border-top: 1px solid var(--line); background: var(--surface); }
.ai-input input {
  flex: 1;
  font: 400 0.88rem var(--font-body);
  padding: 11px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
}
.ai-input input:focus { outline: 2px solid var(--red); outline-offset: 1px; border-color: transparent; }

/* ---------- why us ---------- */

.why-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.why-card {
  grid-column: span 2;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.why-card-featured {
  grid-column: span 3;
  background: var(--ink);
  border-color: var(--ink);
  color: var(--dark-text);
}
.why-card-half { grid-column: span 3; }
.why-card-featured .why-num { color: var(--gold); }
.why-card-featured h3 { color: #fff; }
.why-card-featured p { color: var(--dark-text-2); }
.why-num {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--red);
  display: inline-block;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--line-2);
  padding-bottom: 6px;
}
.why-card h3 { font-size: 1.02rem; margin-bottom: 8px; }
.why-card h3 .why-cn { font-size: 0.78rem; color: var(--ink-3); font-weight: 400; margin-left: 8px; }
.why-card-featured h3 .why-cn { color: var(--dark-text-2); }
.why-card p { font-size: 0.85rem; color: var(--ink-3); }

/* ---------- quote form ---------- */

.quote-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: start; }

.quote-copy h2 { margin-bottom: 18px; }
.quote-copy > p { color: var(--ink-2); font-size: 0.97rem; }

.quote-contacts { margin: 28px 0; display: flex; flex-direction: column; gap: 14px; }
.quote-contact {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.quote-contact span { font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; }
.quote-contact strong { font-size: 0.94rem; font-weight: 600; }

/* WeChat QR contact block */
.quote-contact-wechat { background: #f7f4ec; border: 1px solid #e5dfcf; border-radius: 10px; padding: 12px 14px; }
.wechat-row { display: flex; align-items: center; gap: 14px; margin-top: 8px; }
.wechat-qr {
  width: 88px; height: 88px; border-radius: 8px; background: #fff;
  border: 1px solid #e5dfcf; padding: 4px; display: block;
}
.wechat-id { font-size: 1.05rem; letter-spacing: 0.06em; line-height: 1.35; }
.wechat-id em { display: block; font-style: normal; font-size: 0.68rem; font-weight: 500; color: var(--ink-3); letter-spacing: 0.02em; margin-top: 3px; }

.quote-reassure { display: flex; gap: 8px; align-items: center; font-size: 0.82rem; color: var(--ink-3); }
.quote-reassure svg { color: var(--green); flex: none; }

.quote-form-wrap { position: relative; }
.quote-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 34px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 0.8rem; font-weight: 700; color: var(--ink-2); letter-spacing: 0.02em; }
.field label i { color: var(--red); font-style: normal; }
.field .opt { color: var(--ink-3); font-weight: 400; font-size: 0.72rem; }

.field input,
.field select,
.field textarea {
  font: 400 0.92rem var(--font-body);
  color: var(--ink);
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: var(--paper);
  width: 100%;
  transition: border-color 0.15s ease;
}
.field textarea { resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { outline: 2px solid var(--red); outline-offset: 1px; border-color: transparent; }
.field input.invalid, .field select.invalid { border-color: var(--red); }

.field-error { font-size: 0.76rem; color: var(--red); }

.inquiry-products {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 44px;
  padding: 8px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: var(--paper);
}
.inquiry-products-empty { font-size: 0.82rem; color: var(--ink-3); align-self: center; padding: 4px 8px; }
.product-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--gold-tint);
  color: #7c5a24;
  border-radius: 999px;
  padding: 6px 8px 6px 12px;
}
.product-chip button {
  background: rgba(124, 90, 36, 0.15);
  border: none;
  color: #7c5a24;
  width: 18px; height: 18px;
  border-radius: 50%;
  font-size: 0.7rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.product-chip button:hover { background: rgba(124,90,36,0.3); }

.form-foot { font-size: 0.78rem; color: var(--ink-3); text-align: center; }

.quote-success {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 54px 40px;
  text-align: center;
}
.success-seal {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-size: 1.6rem;
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
}
.quote-success h3 { font-family: var(--font-display); font-size: 1.6rem; margin-bottom: 10px; }
.quote-success p { color: var(--ink-2); font-size: 0.92rem; max-width: 46ch; margin: 0 auto 8px; }
.quote-success .success-cn { color: var(--ink-3); font-size: 0.84rem; margin-bottom: 22px; }
.quote-success .btn { margin-top: 8px; }
.demo-note { font-size: 0.72rem; color: var(--ink-3); margin-top: 22px !important; }

/* ---------- footer ---------- */

.footer { background: var(--ink); color: var(--dark-text); padding: 70px 0 34px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 44px; padding-bottom: 48px; }
.footer-brand p { font-size: 0.85rem; color: var(--dark-text-2); margin-top: 16px; max-width: 40ch; }
.footer .brand-text strong { color: #fff; }
.footer .brand-text small { color: var(--dark-text-2); }

.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.footer-col a, .footer-col span { font-size: 0.85rem; color: var(--dark-text-2); text-decoration: none; }
.footer-col a:hover { color: #fff; }

.footer-legal { border-top: 1px solid rgba(236,231,218,0.14); padding-top: 24px; }
.footer-legal p { font-size: 0.74rem; color: var(--dark-text-2); }

/* ---------- modal ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(29, 37, 48, 0.55);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 24px;
}
.modal-overlay[hidden] { display: none; }

.modal {
  background: var(--surface);
  border-radius: 16px;
  width: min(880px, 100%);
  height: min(700px, 94vh);
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  grid-template-rows: minmax(0, 1fr);
  position: relative;
  animation: modalIn 0.22s ease;
}
.modal > * { min-width: 0; min-height: 0; }
@keyframes modalIn { from { opacity: 0; transform: translateY(14px) scale(0.98); } to { opacity: 1; transform: none; } }

.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 2;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s ease;
}
.modal-close:hover { border-color: var(--ink); color: var(--ink); }

.modal-art {
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  height: 100%;
}
.modal-art span {
  font-family: var(--font-display);
  font-size: clamp(6rem, 10vw, 9rem);
  color: rgba(255,255,255,0.94);
  text-shadow: 0 12px 30px rgba(0,0,0,0.25);
}

.modal-body { padding: 38px 36px; overflow-y: auto; }
.modal-cn { font-family: var(--font-display); font-size: 1.05rem; color: var(--gold); letter-spacing: 0.2em; margin: 4px 0 14px; }
.modal-desc { font-size: 0.9rem; color: var(--ink-2); margin-bottom: 20px; }

.spec-table { display: flex; flex-direction: column; border-top: 1px solid var(--line); margin-bottom: 18px; }
.spec-table > div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.85rem;
  line-height: 1.5;
}
.spec-table dt { color: var(--ink-3); font-weight: 600; }
.spec-table dd { color: var(--ink); overflow-wrap: anywhere; }

.modal-badges { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 22px; }
.modal-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- videos ---------- */

.video-featured {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  background: var(--ink);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 36px;
  cursor: pointer;
}
.video-feature-body {
  padding: clamp(26px, 3.5vw, 44px);
  color: var(--dark-text);
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}
.video-feature-body h3 {
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2vw, 1.7rem);
}
.video-feature-body .vf-en { color: var(--dark-text-2); font-size: 0.92rem; }
.video-feature-body .video-src { color: var(--gold); font-size: 0.78rem; letter-spacing: 0.08em; }
.video-feature-body .btn { margin-top: 10px; align-self: flex-start; }

.video-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--ink);
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.video-card:hover .video-thumb img,
.video-featured:hover .video-thumb img { transform: scale(1.045); }

.play-badge {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(181, 52, 42, 0.94);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.4);
  transition: transform 0.18s ease;
}
.play-badge svg { margin-left: 3px; }
.video-card:hover .play-badge,
.video-featured:hover .play-badge { transform: scale(1.1); }

.video-tag {
  position: absolute;
  left: 10px;
  bottom: 10px;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: rgba(29, 37, 48, 0.72);
  backdrop-filter: blur(4px);
  padding: 5px 10px;
  border-radius: 999px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.video-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.video-card h3 { font-size: 0.9rem; line-height: 1.4; padding: 12px 14px 3px; }
.video-src {
  font-size: 0.72rem;
  color: var(--ink-3);
  padding: 0 14px 14px;
  letter-spacing: 0.04em;
}
.videos-note { margin-top: 18px; font-size: 0.74rem; color: var(--ink-3); }

.video-modal { width: min(760px, 100%); height: auto; max-height: 92vh; overflow-y: auto; display: block; }
.video-frame-wrap { aspect-ratio: 16 / 9; background: #000; }
.video-frame-wrap iframe { width: 100%; height: 100%; border: 0; display: block; }
.video-meta { padding: 20px 24px 24px; }
.video-meta h3 { font-family: var(--font-display); font-size: 1.25rem; }
.video-meta-src { font-size: 0.8rem; color: var(--ink-3); margin-top: 4px; }
.video-meta-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }

@media (max-width: 1024px) {
  .video-featured { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .video-grid { grid-template-columns: 1fr; }
  .play-badge { width: 46px; height: 46px; }
}

/* ---------- toast ---------- */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--ink);
  color: #fff;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 13px 22px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 120;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- reveal ---------- */

.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .hero-card { width: min(300px, 80%); aspect-ratio: 4/4; }
  .section-head { grid-template-columns: 1fr; gap: 18px; align-items: start; }
  .flagship { grid-template-columns: repeat(2, 1fr); }
  .product-card, .product-card.wide { grid-column: span 1; }
  .catalog { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: 1fr; }
  .tech-steps { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .ai-grid, .quote-grid { grid-template-columns: 1fr; gap: 44px; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .why-card, .why-card-featured { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 74px; left: 0; right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 10px 28px 18px;
    box-shadow: 0 24px 40px rgba(29,37,48,0.1);
  }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-links a span { display: inline; margin-left: 8px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-inner { gap: 14px; }
  .inquiry-chip { display: none; }

  .hero { padding-top: 48px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .flagship, .catalog { grid-template-columns: 1fr; }
  .tech-steps, .steps { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .quote-form { padding: 24px 20px; }

  .modal { grid-template-columns: 1fr; height: min(92vh, 700px); grid-template-rows: auto minmax(0, 1fr); }
  .modal-art { min-height: 180px; }
  .modal-art span { font-size: 5rem; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 430px) {
  .container { padding: 0 20px; }
  .brand-text { display: none; }
  .nav-actions .btn { padding: 9px 12px; font-size: 0.78rem; }
}