/* ============================================================
   MOTOFORGE — Racing theme (Style A: track performance)
   Tokens per docs/04 §1. Accent #e10600 used ONLY for
   CTA / price / focus / selected states + brand mark.
   ============================================================ */

:root {
  --bg: #0b0d10;
  --surface: #14171c;
  --surface-2: #1d2128;
  --line: #2a2f38;
  --text: #e8eaed;
  --text-dim: #9aa0a8;
  --accent: #e10600;
  --accent-dark: #a80400;
  --font-head: 'Montserrat', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Mono', 'SF Mono', Consolas, 'Courier New', monospace;
  --cut: 14px; /* clipped-corner size */
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-head); text-transform: uppercase; letter-spacing: .02em; line-height: 1.12; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.mf-wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- Announcement bar (first conversion slot) ---------- */
.mf-announce {
  display: flex; align-items: center; justify-content: center; gap: 18px; flex-wrap: wrap;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 8px 24px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em;
  color: var(--text-dim); text-transform: uppercase;
  position: relative;
}
.mf-announce::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 6px;
  background: repeating-linear-gradient(-45deg, var(--accent) 0 6px, transparent 6px 12px);
}
.mf-announce-link { color: var(--accent); font-weight: 700; }
.mf-announce-link:hover { text-decoration: underline; }

/* ---------- Header / nav ---------- */
.mf-header {
  display: flex; align-items: center; gap: 28px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 16, .94);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(6px);
}
.mf-logo {
  font-family: var(--font-head); font-weight: 800; font-size: 22px;
  letter-spacing: .08em; color: var(--text); white-space: nowrap;
}
.mf-logo span { color: var(--accent); }
.mf-logo-sm { font-size: 18px; }
.mf-nav { display: flex; gap: 4px; margin-left: 8px; flex: 1; }
.mf-nav a {
  font-family: var(--font-head); font-weight: 700; font-size: 13px;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-dim); padding: 8px 12px;
  border-bottom: 2px solid transparent;
}
.mf-nav a:hover { color: var(--text); }
.mf-nav a.is-active { color: var(--text); border-bottom-color: var(--accent); } /* selected state -> accent */
.mf-header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.mf-cart {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-weight: 700; font-size: 13px;
  text-transform: uppercase; letter-spacing: .06em;
  border: 1px solid var(--line); padding: 8px 14px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  background: var(--surface);
}
.mf-cart:hover { border-color: var(--text-dim); }
.mf-cart span {
  font-family: var(--font-mono); font-weight: 700;
  background: var(--accent); color: #fff;
  min-width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; padding: 0 5px;
}
.mf-burger {
  display: none; background: var(--surface); color: var(--text);
  border: 1px solid var(--line); font-size: 18px; line-height: 1;
  padding: 8px 12px; cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

/* ---------- USP numeric strip ---------- */
.mf-usp {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.mf-usp-item {
  background: var(--surface); padding: 22px 18px; text-align: center;
  display: flex; flex-direction: column; gap: 4px;
}
.mf-usp-value {
  font-family: var(--font-head); font-weight: 800; font-size: 26px;
  color: var(--text); letter-spacing: .02em;
}
.mf-usp-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }

/* ---------- Buttons ---------- */
.mf-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-head); font-weight: 800; font-size: 14px;
  text-transform: uppercase; letter-spacing: .08em;
  padding: 14px 28px; cursor: pointer; border: none;
  background: var(--accent); color: #fff;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background .15s ease;
}
.mf-btn:hover { background: var(--accent-dark); }
.mf-btn:disabled { opacity: .5; cursor: not-allowed; }
.mf-btn-ghost {
  background: transparent; color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.mf-btn-ghost:hover { background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--text-dim); }
.mf-btn-sm { padding: 9px 18px; font-size: 12px; }
.mf-btn-block { width: 100%; }

/* ---------- Product cards ---------- */
.mf-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--surface); border: 1px solid var(--line);
  padding: 14px; position: relative;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: border-color .15s ease, transform .15s ease;
}
.mf-card:hover { border-color: #4a5160; transform: translateY(-2px); }
.mf-card-media {
  position: relative; background: var(--surface-2); margin: -14px -14px 6px;
  padding: 18px; display: flex; align-items: center; justify-content: center;
  background-image: repeating-linear-gradient(-45deg, rgba(255,255,255,.025) 0 2px, transparent 2px 12px);
}
.mf-img { display: block; filter: drop-shadow(0 8px 14px rgba(0,0,0,.45)); }
/* 实拍照片：contain 不裁切，白底图在深色主题下加圆角白底 */
img.mf-photo { object-fit: contain; background: #fff; border-radius: 6px; max-width: 100%; height: auto; }
.mf-card-media img.mf-photo { width: 150px; height: 150px; }
.mf-pdp-main img.mf-photo { width: 320px; height: 320px; }
.mf-pdp-thumb img.mf-photo { width: 46px; height: 46px; border-radius: 4px; }
.mf-cart-line-media img.mf-photo { width: 72px; height: 72px; border-radius: 4px; }
.mf-fit-card img.mf-photo { width: 40px; height: 40px; border-radius: 4px; }
.mf-card-brand { font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); }
.mf-card-name { font-family: var(--font-head); font-weight: 700; font-size: 15px; text-transform: uppercase; letter-spacing: .02em; min-height: 2.2em; }
.mf-card-rating { color: var(--text-dim); font-size: 12px; letter-spacing: .12em; display: flex; align-items: center; gap: 6px; }
.mf-card-rating span { font-family: var(--font-mono); letter-spacing: 0; }
.mf-card-price { margin-top: auto; padding-top: 6px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.mf-price { font-family: var(--font-head); font-weight: 800; font-size: 19px; color: var(--accent); } /* price -> accent */
.mf-price-compare { font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); text-decoration: line-through; }
.mf-tier-hint { font-family: var(--font-mono); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-dim); width: 100%; }
.mf-badge {
  position: absolute; top: 10px; left: 10px; z-index: 2;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase;
  background: rgba(11,13,16,.85); color: var(--text); border: 1px solid var(--line);
  padding: 3px 8px;
}

/* ---------- Cert badges (verifiable names only) ---------- */
.mf-cert {
  display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid var(--line); color: var(--text-dim);
  padding: 3px 8px; background: var(--surface);
}
.mf-cert-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

/* ---------- Sections ---------- */
.mf-section { padding: 64px 0; }
.mf-section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 28px; flex-wrap: wrap; }
.mf-section-index {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .18em;
  color: var(--text-dim); text-transform: uppercase; display: block; margin-bottom: 8px;
}
.mf-section-index b { color: var(--accent); font-weight: 700; }
.mf-section-title { font-size: clamp(24px, 3.4vw, 36px); font-weight: 800; margin: 0; }
.mf-section-sub { color: var(--text-dim); max-width: 560px; margin: 6px 0 0; font-size: 15px; }
.mf-section-link { font-family: var(--font-head); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); white-space: nowrap; }
.mf-section-link:hover { color: var(--accent); }

/* ---------- Hero ---------- */
.mf-hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    repeating-linear-gradient(-45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 14px),
    radial-gradient(1200px 500px at 85% -10%, rgba(225,6,0,.14), transparent 60%),
    var(--bg);
}
.mf-hero-inner { padding: 88px 0 96px; position: relative; }
.mf-hero-kicker {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--text-dim); display: inline-flex; align-items: center; gap: 12px;
}
.mf-hero-kicker::before { content: ''; width: 34px; height: 2px; background: var(--accent); }
.mf-hero h1 {
  font-size: clamp(38px, 7vw, 76px); font-weight: 800; letter-spacing: .01em;
  margin: 18px 0 20px; max-width: 820px;
}
.mf-hero h1 em { font-style: normal; box-shadow: inset 0 -6px 0 var(--accent); } /* red underline mark, text stays base color */
.mf-hero p { color: var(--text-dim); font-size: 17px; max-width: 560px; margin-bottom: 32px; }
.mf-hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.mf-hero-strip {
  position: absolute; right: -40px; top: 50%; transform: translateY(-50%) rotate(14deg);
  width: 220px; height: 560px; pointer-events: none; opacity: .5;
  background: repeating-linear-gradient(0deg, var(--surface-2) 0 26px, transparent 26px 52px);
  border-left: 2px solid var(--accent);
}
.mf-hero-stats { display: flex; gap: 28px; margin-top: 44px; flex-wrap: wrap; }
.mf-hero-stat { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); border-left: 2px solid var(--line); padding-left: 12px; }
.mf-hero-stat b { display: block; font-family: var(--font-head); font-weight: 800; font-size: 18px; color: var(--text); letter-spacing: .02em; }

/* ---------- Riding-style selector grid ---------- */
.mf-style-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.mf-style-tile {
  display: flex; flex-direction: column; justify-content: flex-end; gap: 6px;
  background: var(--surface); border: 1px solid var(--line);
  padding: 20px; min-height: 170px; position: relative; overflow: hidden;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: border-color .15s ease, transform .15s ease;
}
.mf-style-tile:hover { border-color: var(--text-dim); transform: translateY(-2px); }
.mf-style-tile::after {
  content: ''; position: absolute; right: -30px; top: -30px; width: 120px; height: 120px;
  transform: rotate(45deg);
  background: repeating-linear-gradient(0deg, var(--surface-2) 0 10px, transparent 10px 20px);
}
.mf-style-tile-num { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--text-dim); }
.mf-style-tile-name { font-family: var(--font-head); font-weight: 800; font-size: 20px; text-transform: uppercase; }
.mf-style-tile-desc { color: var(--text-dim); font-size: 13px; }
.mf-style-tile-go { font-family: var(--font-head); font-weight: 700; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; margin-top: 8px; }
.mf-style-tile:hover .mf-style-tile-go { color: var(--accent); }

/* ---------- Brand wall ---------- */
.mf-brand-wall { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.mf-brand-cell {
  background: var(--surface); padding: 26px 14px; text-align: center;
  display: flex; flex-direction: column; gap: 4px; align-items: center;
  transition: background .15s ease;
}
.mf-brand-cell:hover { background: var(--surface-2); }
.mf-brand-cell-name { font-family: var(--font-head); font-weight: 800; font-size: 17px; letter-spacing: .1em; text-transform: uppercase; }
.mf-brand-cell-meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; color: var(--text-dim); text-transform: uppercase; }

/* ---------- Guide cards ---------- */
.mf-guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.mf-guide-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--surface); border: 1px solid var(--line); padding: 22px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: border-color .15s ease, transform .15s ease;
}
.mf-guide-card:hover { border-color: var(--text-dim); transform: translateY(-2px); }
.mf-guide-meta { display: flex; gap: 10px; align-items: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }
.mf-guide-video {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text); border: 1px solid var(--line); padding: 2px 8px; background: var(--surface-2);
}
.mf-guide-video::before { content: ''; width: 0; height: 0; border-left: 7px solid var(--accent); border-top: 5px solid transparent; border-bottom: 5px solid transparent; }
.mf-guide-title { font-family: var(--font-head); font-weight: 700; font-size: 17px; text-transform: uppercase; margin: 0; }
.mf-guide-excerpt { color: var(--text-dim); font-size: 14px; margin: 0; }
.mf-guide-read { font-family: var(--font-head); font-weight: 700; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin-top: auto; padding-top: 6px; }
.mf-guide-card:hover .mf-guide-read { color: var(--accent); }

/* ---------- Catalog toolbar ---------- */
.mf-toolbar {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto; gap: 10px;
  background: var(--surface); border: 1px solid var(--line); padding: 14px;
  margin-bottom: 8px;
}
.mf-field { display: flex; flex-direction: column; gap: 4px; }
.mf-field label { font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); }
.mf-input, .mf-select, .mf-textarea {
  background: var(--bg); border: 1px solid var(--line); color: var(--text);
  font-family: var(--font-body); font-size: 14px; padding: 10px 12px; width: 100%;
}
.mf-input:focus, .mf-select:focus, .mf-textarea:focus { border-color: var(--accent); outline: none; } /* focus -> accent */
.mf-input::placeholder { color: #565d68; }
.mf-select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%), linear-gradient(135deg, var(--text-dim) 50%, transparent 50%); background-position: calc(100% - 16px) 55%, calc(100% - 11px) 55%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 30px; }
.mf-textarea { resize: vertical; min-height: 96px; }
.mf-range { display: flex; gap: 8px; }
.mf-catalog-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 16px 0; font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); flex-wrap: wrap; }
.mf-load-more { display: flex; justify-content: center; margin-top: 28px; }

/* ---------- Product grids ---------- */
.mf-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.mf-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

/* ---------- Product detail ---------- */
.mf-pdp { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 36px; padding: 44px 0; }
.mf-pdp-media { position: sticky; top: 96px; align-self: start; }
.mf-pdp-main {
  background: var(--surface-2); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; padding: 40px 20px;
  background-image: repeating-linear-gradient(-45deg, rgba(255,255,255,.025) 0 2px, transparent 2px 14px);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.mf-pdp-thumbs { display: flex; gap: 8px; margin-top: 10px; }
.mf-pdp-thumb {
  width: 64px; height: 64px; padding: 8px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center;
}
.mf-pdp-thumb.is-selected { border-color: var(--accent); } /* selected -> accent */
.mf-pdp-brand { font-family: var(--font-mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-dim); }
.mf-pdp h1 { font-size: clamp(24px, 3.4vw, 38px); margin: 8px 0 10px; }
.mf-pdp-rating { color: var(--text-dim); font-size: 13px; letter-spacing: .14em; display: flex; gap: 8px; align-items: center; }
.mf-pdp-rating span { font-family: var(--font-mono); letter-spacing: 0; }
.mf-pdp-price { display: flex; align-items: baseline; gap: 12px; margin: 18px 0; }
.mf-pdp-price .mf-price { font-size: 34px; }
.mf-pdp-price .mf-price-compare { font-size: 16px; }
.mf-pdp-avail { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }
.mf-pdp-summary { color: var(--text-dim); }
.mf-pdp-block { border-top: 1px solid var(--line); padding: 18px 0; }
.mf-pdp-block-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-dim); display: block; margin-bottom: 10px; }
.mf-variant-row { display: flex; gap: 8px; flex-wrap: wrap; }
.mf-variant {
  font-family: var(--font-mono); font-size: 13px; font-weight: 700;
  background: var(--surface); border: 1px solid var(--line); color: var(--text);
  min-width: 52px; padding: 10px 12px; cursor: pointer; text-align: center;
}
.mf-variant:hover { border-color: var(--text-dim); }
.mf-variant.is-selected { border-color: var(--accent); color: var(--accent); } /* selected -> accent */
.mf-variant:disabled { opacity: .35; cursor: not-allowed; }
.mf-qty { display: inline-flex; align-items: stretch; border: 1px solid var(--line); background: var(--surface); }
.mf-qty button { width: 40px; background: var(--surface-2); border: none; color: var(--text); font-size: 17px; cursor: pointer; }
.mf-qty button:hover { color: var(--accent); }
.mf-qty input { width: 56px; text-align: center; background: transparent; border: none; color: var(--text); font-family: var(--font-mono); font-size: 15px; }
.mf-qty input:focus { outline: none; }
.mf-pdp-buy { display: flex; gap: 12px; align-items: stretch; flex-wrap: wrap; }
.mf-trust { display: flex; gap: 16px; flex-wrap: wrap; font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-dim); align-items: center; }
.mf-trust span::before { content: '✓ '; color: var(--text); }
.mf-spec-table, .mf-fitment-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.mf-spec-table th, .mf-spec-table td, .mf-fitment-table th, .mf-fitment-table td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.mf-spec-table th, .mf-fitment-table th { background: var(--surface-2); font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); font-weight: 400; }
.mf-spec-table td { font-family: var(--font-mono); font-size: 13px; }
.mf-tier-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.mf-tier-table th, .mf-tier-table td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.mf-tier-table th { background: var(--surface-2); font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); font-weight: 400; }
.mf-tier-table td { font-family: var(--font-mono); }
.mf-tier-note { color: var(--text-dim); font-size: 13px; margin-top: 8px; }
.mf-tier-note a { color: var(--accent); font-weight: 700; }
.mf-fits-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.mf-fit-card { display: flex; align-items: center; gap: 12px; background: var(--surface); border: 1px solid var(--line); padding: 10px 14px; }
.mf-fit-card:hover { border-color: var(--text-dim); }
.mf-fit-card-name { font-family: var(--font-head); font-weight: 700; font-size: 13px; text-transform: uppercase; }
.mf-guide-ref { display: flex; gap: 16px; align-items: center; background: var(--surface); border: 1px solid var(--line); padding: 16px 18px; }
.mf-guide-ref:hover { border-color: var(--text-dim); }
.mf-guide-ref-title { font-family: var(--font-head); font-weight: 700; font-size: 15px; text-transform: uppercase; }
.mf-guide-ref-meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }

/* Sticky mobile buy bar (product page, ≤820px) */
.mf-sticky-buy {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: rgba(20, 23, 28, .97); border-top: 1px solid var(--line);
  padding: 10px 16px; align-items: center; gap: 14px;
  backdrop-filter: blur(6px);
}
.mf-sticky-buy-price { display: flex; flex-direction: column; line-height: 1.2; }
.mf-sticky-buy-price .mf-price { font-size: 20px; }
.mf-sticky-buy-price small { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em; }
.mf-sticky-buy .mf-btn { flex: 1; padding: 13px 18px; }

/* ---------- Custom shop page ---------- */
.mf-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 48px; }
.mf-step { background: var(--surface); padding: 22px 18px; position: relative; }
.mf-step-num { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--text-dim); display: block; margin-bottom: 10px; }
.mf-step-name { font-family: var(--font-head); font-weight: 800; font-size: 15px; text-transform: uppercase; margin-bottom: 6px; }
.mf-step-desc { color: var(--text-dim); font-size: 13px; margin: 0; }
.mf-cta-panel {
  background:
    repeating-linear-gradient(-45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 14px),
    var(--surface);
  border: 1px solid var(--line);
  padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.mf-cta-panel h3 { font-size: 24px; margin-bottom: 6px; }
.mf-cta-panel p { color: var(--text-dim); margin: 0; max-width: 520px; }

/* ---------- Forms (RFQ / checkout) ---------- */
.mf-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.mf-form .mf-field-full { grid-column: 1 / -1; }
.mf-form-actions { grid-column: 1 / -1; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.mf-form-error {
  grid-column: 1 / -1;
  border: 1px solid var(--accent); background: rgba(225, 6, 0, .08);
  color: var(--text); font-size: 14px; padding: 12px 16px;
}
.mf-line-items { border: 1px solid var(--line); background: var(--surface); padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.mf-line-item { display: grid; grid-template-columns: 1fr 130px auto; gap: 10px; align-items: end; }
.mf-line-item-head { display: flex; justify-content: space-between; align-items: center; }
.mf-line-remove { background: none; border: 1px solid var(--line); color: var(--text-dim); cursor: pointer; font-size: 12px; font-family: var(--font-mono); padding: 8px 12px; text-transform: uppercase; letter-spacing: .06em; }
.mf-line-remove:hover { color: var(--accent); border-color: var(--accent); }
.mf-success {
  border: 1px solid var(--line); background: var(--surface); padding: 40px; text-align: center;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.mf-success-num { font-family: var(--font-head); font-weight: 800; font-size: 34px; color: var(--accent); letter-spacing: .04em; margin: 10px 0; }
.mf-success p { color: var(--text-dim); max-width: 480px; margin: 0 auto 8px; }

/* ---------- States ---------- */
.mf-state { border: 1px dashed var(--line); background: var(--surface); color: var(--text-dim); padding: 40px 24px; text-align: center; font-size: 15px; }
.mf-state b { display: block; font-family: var(--font-head); font-weight: 800; font-size: 17px; text-transform: uppercase; color: var(--text); margin-bottom: 8px; }
.mf-state-error { border: 1px solid var(--accent); border-style: solid; }
.mf-state .mf-btn { margin-top: 16px; }
.mf-skeleton { min-height: 240px; }

/* ---------- Guide article ---------- */
.mf-article { max-width: 760px; margin: 0 auto; padding: 44px 24px 64px; }
.mf-article-meta { display: flex; gap: 12px; align-items: center; font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 14px; flex-wrap: wrap; }
.mf-article h1 { font-size: clamp(26px, 4vw, 40px); }
.mf-article-body h2 { font-size: 22px; margin: 1.6em 0 .6em; }
.mf-article-body h3 { font-size: 17px; margin: 1.5em 0 .5em; color: var(--text); }
.mf-article-body p { color: #cfd3d9; }
.mf-article-body ul { padding-left: 22px; color: #cfd3d9; }
.mf-article-body li { margin-bottom: 6px; }
.mf-article-body strong { color: var(--text); }
.mf-video-note { display: flex; align-items: center; gap: 14px; background: var(--surface); border: 1px solid var(--line); padding: 16px 18px; margin: 20px 0; }
.mf-video-note-play { width: 44px; height: 44px; border: 1px solid var(--accent); display: flex; align-items: center; justify-content: center; flex: none; }
.mf-video-note-play::before { content: ''; width: 0; height: 0; border-left: 14px solid var(--accent); border-top: 9px solid transparent; border-bottom: 9px solid transparent; margin-left: 3px; }

/* ---------- Cart ---------- */
.mf-cart-layout { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 28px; padding: 44px 0 64px; align-items: start; }
.mf-cart-lines { display: flex; flex-direction: column; gap: 12px; }
.mf-cart-line { display: grid; grid-template-columns: 88px 1fr auto; gap: 16px; background: var(--surface); border: 1px solid var(--line); padding: 14px; }
.mf-cart-line-media { background: var(--surface-2); display: flex; align-items: center; justify-content: center; padding: 6px; }
.mf-cart-line-brand { font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); }
.mf-cart-line-name { font-family: var(--font-head); font-weight: 700; font-size: 14px; text-transform: uppercase; }
.mf-cart-line-name a:hover { color: var(--accent); }
.mf-cart-line-variant { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); margin-top: 2px; }
.mf-cart-line-controls { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: flex-end; }
.mf-cart-line-price { font-family: var(--font-head); font-weight: 800; font-size: 17px; color: var(--accent); white-space: nowrap; }
.mf-cart-line-unit { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); display: block; text-align: right; }
.mf-cart-line-remove { background: none; border: none; color: var(--text-dim); font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; cursor: pointer; padding: 0; }
.mf-cart-line-remove:hover { color: var(--accent); }
.mf-ship-panel { background: var(--surface); border: 1px solid var(--line); padding: 20px; margin-bottom: 14px; }
.mf-ship-track { height: 8px; background: var(--surface-2); border: 1px solid var(--line); position: relative; margin-top: 10px; }
.mf-ship-fill { position: absolute; inset: 0 auto 0 0; background: var(--accent); transition: width .3s ease; }
.mf-ship-label { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-dim); }
.mf-ship-label b { color: var(--text); }
.mf-summary { background: var(--surface); border: 1px solid var(--line); padding: 20px; }
.mf-summary-row { display: flex; justify-content: space-between; font-size: 14px; padding: 6px 0; color: var(--text-dim); }
.mf-summary-row b { color: var(--text); font-family: var(--font-mono); }
.mf-summary-total { border-top: 1px solid var(--line); margin-top: 8px; padding-top: 12px; }
.mf-summary-total span { font-family: var(--font-head); font-weight: 800; text-transform: uppercase; color: var(--text); }
.mf-summary-total b { font-family: var(--font-head); font-weight: 800; font-size: 22px; color: var(--accent); }
.mf-checkout-title { font-size: 16px; margin: 18px 0 12px; }

/* ---------- About ---------- */
.mf-about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.mf-about-card { background: var(--surface); border: 1px solid var(--line); padding: 26px; clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%); }
.mf-about-card h3 { font-size: 17px; }
.mf-about-card p { color: var(--text-dim); font-size: 14px; margin: 0; }
.mf-about-num { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--text-dim); display: block; margin-bottom: 12px; }
.mf-about-num b { color: var(--accent); }
.mf-prose { max-width: 760px; color: var(--text-dim); }
.mf-prose b { color: var(--text); }

/* ---------- Footer ---------- */
.mf-footer { border-top: 1px solid var(--line); background: var(--surface); margin-top: 64px; }
.mf-footer-cols { max-width: 1180px; margin: 0 auto; padding: 48px 24px 32px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.mf-footer-cols p { color: var(--text-dim); font-size: 14px; }
.mf-footer h4 { font-size: 13px; letter-spacing: .1em; color: var(--text); margin-bottom: 14px; }
.mf-footer-cols a { display: block; color: var(--text-dim); font-size: 14px; padding: 4px 0; }
.mf-footer-cols a:hover { color: var(--text); }
.mf-footer-legal { border-top: 1px solid var(--line); padding: 18px 24px; text-align: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; color: var(--text-dim); text-transform: uppercase; }

/* ---------- Page hero (inner pages) ---------- */
.mf-page-head { padding: 44px 0 8px; }
.mf-page-head h1 { font-size: clamp(28px, 4.4vw, 46px); margin: 10px 0 8px; }
.mf-page-head p { color: var(--text-dim); max-width: 640px; margin: 0; }

/* ============================================================
   Mobile ≤820px: header = logo + burger + cart trio
   ============================================================ */
@media (max-width: 820px) {
  .mf-wrap { padding: 0 16px; }
  .mf-header { padding: 12px 16px; gap: 12px; }
  .mf-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; margin: 0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 8px 0;
  }
  .mf-nav.is-open { display: flex; }
  .mf-nav a { padding: 13px 20px; border-bottom: 1px solid var(--line); }
  .mf-nav a.is-active { border-bottom-color: var(--line); border-left: 2px solid var(--accent); }
  .mf-burger { display: inline-flex; }
  .mf-cart { padding: 8px 10px; }
  .mf-usp { grid-template-columns: repeat(2, 1fr); }
  .mf-usp-value { font-size: 21px; }
  .mf-hero-inner { padding: 56px 0 64px; }
  .mf-hero-strip { display: none; }
  .mf-style-grid { grid-template-columns: repeat(2, 1fr); }
  .mf-grid, .mf-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .mf-guide-grid { grid-template-columns: 1fr; }
  .mf-brand-wall { grid-template-columns: repeat(2, 1fr); }
  .mf-steps { grid-template-columns: repeat(2, 1fr); }
  .mf-about-grid { grid-template-columns: 1fr; }
  .mf-toolbar { grid-template-columns: 1fr 1fr; }
  .mf-toolbar .mf-field-wide { grid-column: 1 / -1; }
  .mf-pdp { grid-template-columns: 1fr; gap: 24px; padding-bottom: 120px; }
  .mf-pdp-media { position: static; }
  .mf-cart-layout { grid-template-columns: 1fr; padding-bottom: 32px; }
  .mf-form { grid-template-columns: 1fr; }
  .mf-line-item { grid-template-columns: 1fr 90px auto; }
  .mf-footer-cols { grid-template-columns: 1fr; gap: 24px; }
  .mf-section { padding: 44px 0; }
  /* sticky bottom buy bar: product page only */
  .mf-sticky-buy { display: flex; }
  body[data-page="product"] { padding-bottom: 0; }
}

@media (max-width: 480px) {
  .mf-grid, .mf-grid-3, .mf-style-grid { grid-template-columns: 1fr; }
  .mf-cart-line { grid-template-columns: 64px 1fr; }
  .mf-cart-line-controls { grid-column: 1 / -1; justify-content: space-between; }
}