:root {
  --bg: #F6F5F2; --surface: #FFFFFF; --ink: #121212; --muted: #5F5E5A; --line: #E4E2DC; --soft: #EFEDE8;
  --accent: #4B3CF2; --accent-soft: #ECEAFE; --accent-ink: #FFFFFF; --fit: #12805C; --fit-soft: #E2F3EC;
  --warn: #B4400C; --warn-soft: #FCEBDD; --demo: #16161A; --demo-2: #24242A;
  --r: 16px; --r-lg: 24px;
  --font: "Instrument Sans", system-ui, sans-serif; --serif: "Instrument Serif", Georgia, serif;
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.shoe { width: 100%; height: auto; display: block; }

/* ---------- demo chrome ---------- */
.demo-bar { background: var(--demo); color: #EDEDF2; position: sticky; top: 0; z-index: 40; }
.demo-bar .in { max-width: 1240px; margin: 0 auto; padding: 8px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; }
.mark { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; letter-spacing: -.01em; }
.mark i { width: 22px; height: 22px; border-radius: 7px; background: linear-gradient(135deg, #7B6CFF, var(--accent)); display: inline-block; }
.mark small { font-weight: 500; color: #A9A9B6; }
.views { display: flex; gap: 4px; background: var(--demo-2); padding: 4px; border-radius: 999px; }
.views button { border: 0; background: none; color: #C9C9D4; padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: 14px; cursor: pointer; min-height: 36px; }
.views button[aria-selected="true"] { background: #fff; color: var(--demo); }
.demo-note { margin-left: auto; font-size: 12.5px; color: #A9A9B6; }
.src { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #C9C9D4; }
.src select { background: var(--demo-2); border: 1px solid #3A3A44; color: #fff; border-radius: 10px; padding: 6px 8px; min-height: 34px; }

/* ---------- sample store ---------- */
.store-head { background: var(--surface); border-bottom: 1px solid var(--line); }
.store-head .in { max-width: 1240px; margin: 0 auto; padding: 14px 16px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.store-logo { font-family: var(--serif); font-size: 28px; letter-spacing: -.01em; text-decoration: none; }
.store-nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14.5px; color: var(--muted); }
.store-nav button { background: none; border: 0; padding: 6px 0; cursor: pointer; color: inherit; min-height: 36px; }
.store-nav button[aria-current="true"] { color: var(--ink); font-weight: 600; border-bottom: 2px solid var(--ink); }
.cart-btn { margin-left: auto; position: relative; border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 8px 14px; cursor: pointer; font-weight: 600; min-height: 40px; }
.cart-btn b { background: var(--ink); color: #fff; border-radius: 999px; padding: 1px 7px; font-size: 12px; margin-left: 6px; }
.store { max-width: 1240px; margin: 0 auto; padding: 22px 16px 160px; }
.store h1 { font-family: var(--serif); font-weight: 400; font-size: clamp(2rem, 4vw, 2.8rem); margin: 0 0 4px; letter-spacing: -.01em; }
.store .count { color: var(--muted); margin: 0 0 18px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.filters span { border: 1px solid var(--line); background: var(--surface); padding: 6px 12px; border-radius: 999px; font-size: 13.5px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr)); gap: 16px; }
.card { background: var(--surface); border-radius: var(--r); padding: 12px; border: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; text-align: left; cursor: pointer; }
.card .img { background: var(--soft); border-radius: 12px; padding: 14px 10px 6px; }
.card .nm { font-weight: 600; }
.card .pr { color: var(--muted); font-size: 14.5px; }
.swatches { display: flex; gap: 5px; }
.swatches i { width: 14px; height: 14px; border-radius: 50%; border: 1px solid rgba(0,0,0,.12); display: inline-block; }
.pdp { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(360px, 100%), 1fr)); gap: 28px; }
.pdp .img { background: var(--soft); border-radius: var(--r-lg); padding: 30px; }
.pdp h1 { margin-bottom: 6px; }
.size-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(56px, 1fr)); gap: 6px; margin: 10px 0 14px; }
.size-grid button { border: 1px solid var(--line); background: var(--surface); border-radius: 10px; min-height: 44px; cursor: pointer; font-weight: 600; }
.size-grid button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.size-grid button:disabled { color: #BBB; text-decoration: line-through; cursor: not-allowed; }
.size-grid button.rec { box-shadow: 0 0 0 2px var(--fit) inset; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 20px; border-radius: 999px; border: 1px solid transparent; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn-ink { background: var(--ink); color: #fff; }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-line { background: var(--surface); border-color: var(--line); }
.btn-sm { min-height: 38px; padding: 0 14px; font-size: 14px; }
.btn-block { width: 100%; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--accent); font-weight: 600; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.muted { color: var(--muted); }
.chip { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 10px; font-size: 12.5px; font-weight: 600; background: var(--soft); color: var(--muted); }
.chip.fit { background: var(--fit-soft); color: var(--fit); }
.chip.acc { background: var(--accent-soft); color: var(--accent); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }

/* ---------- ad landing (composed page) ---------- */
.landing-hero { background: linear-gradient(135deg, #1B1A2E, #2C2A55); color: #fff; border-radius: var(--r-lg); padding: clamp(22px, 4vw, 44px); display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 24px; align-items: center; margin-bottom: 22px; }
.landing-hero h1 { color: #fff; font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.05; }
.landing-hero .src-note { font-size: 13px; color: #C9C7F0; margin-bottom: 10px; }
.landing-hero .img { background: rgba(255,255,255,.07); border-radius: var(--r-lg); padding: 24px; }

/* ---------- pageless overlay ---------- */
.ov-bar { position: fixed; left: 50%; transform: translateX(-50%); bottom: 14px; z-index: 30; width: min(640px, calc(100vw - 24px)); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; box-shadow: 0 10px 40px rgba(18, 18, 30, .16); display: flex; align-items: center; gap: 8px; padding: 6px 6px 6px 16px; }
.ov-bar .spark { width: 26px; height: 26px; border-radius: 9px; background: linear-gradient(135deg, #7B6CFF, var(--accent)); flex: none; }
.ov-bar button.ask { flex: 1; text-align: left; background: none; border: 0; color: var(--muted); min-height: 44px; cursor: text; font-size: 15px; }
.ov-panel { position: fixed; left: 0; right: 0; bottom: 0; z-index: 35; background: var(--surface); border-radius: 22px 22px 0 0; box-shadow: 0 -18px 50px rgba(18, 18, 30, .18); display: flex; flex-direction: column; transition: height .22s ease; max-width: 980px; margin: 0 auto; }
.ov-panel.half { height: 56vh; }
.ov-panel.full { height: calc(100vh - 56px); }
.ov-panel.dragging { transition: none; }
.ov-handle { display: flex; justify-content: center; padding: 10px 0 4px; cursor: grab; touch-action: none; border: 0; background: none; width: 100%; }
.ov-handle span { width: 44px; height: 5px; border-radius: 99px; background: #D4D2CC; }
.ov-top { display: flex; align-items: center; gap: 10px; padding: 4px 16px 10px; border-bottom: 1px solid var(--line); }
.ov-top form { flex: 1; display: flex; gap: 8px; }
.ov-top input { flex: 1; min-height: 46px; border: 1.5px solid var(--line); border-radius: 999px; padding: 0 16px; background: var(--bg); }
.ov-top input:focus { outline: none; border-color: var(--accent); background: #fff; }
.ov-body { overflow-y: auto; padding: 16px; flex: 1; overscroll-behavior: contain; }
.ov-head { font-family: var(--serif); font-size: 26px; line-height: 1.15; margin: 0 0 4px; letter-spacing: -.01em; }
.ov-sub { color: var(--muted); font-size: 14px; margin: 0 0 14px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 0 14px; min-height: 38px; cursor: pointer; font-weight: 500; font-size: 14px; }
.chips button:hover { border-color: var(--accent); color: var(--accent); }
.follow { background: var(--accent-soft); border-radius: 14px; padding: 12px 14px; margin-bottom: 14px; }
.follow b { display: block; margin-bottom: 8px; color: var(--accent); }
.mini-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(190px, 46%), 1fr)); gap: 12px; }
.mini { border: 1px solid var(--line); border-radius: 14px; padding: 10px; display: flex; flex-direction: column; gap: 4px; background: var(--surface); text-align: left; }
.mini .img { background: var(--soft); border-radius: 10px; padding: 8px; cursor: pointer; }
.mini .why { font-size: 12px; color: var(--muted); }
.cmp { width: 100%; border-collapse: collapse; font-size: 14px; }
.cmp th, .cmp td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.cmp th { color: var(--muted); font-weight: 600; width: 22%; }
.focus { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 18px; }
.focus .img { background: var(--soft); border-radius: 16px; padding: 18px; }
.fitbox { border: 1.5px solid var(--fit); background: var(--fit-soft); border-radius: 14px; padding: 12px 14px; }
.fitbox .big { font-size: 28px; font-weight: 700; color: var(--fit); line-height: 1.1; }
.bundle { border: 1px dashed var(--line); border-radius: 14px; padding: 12px; margin-top: 14px; }
.bundle .row-items { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.bundle .row-items .it { width: 86px; text-align: center; font-size: 12px; }
.bundle .row-items .it .img { background: var(--soft); border-radius: 10px; padding: 6px; }
.guard { margin-top: 16px; font-size: 13px; }
.guard summary { cursor: pointer; color: var(--fit); font-weight: 600; list-style: none; }
.guard summary::-webkit-details-marker { display: none; }
.guard ul { margin: 8px 0 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.guard li { display: flex; gap: 8px; }
.guard li.bad { color: var(--warn); }

/* fit passport */
.fp { max-width: 560px; }
.fp h3 { font-family: var(--serif); font-weight: 400; font-size: 26px; margin: 0 0 6px; }
.fp .opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 12px 0; }
.fp .opt { border: 1.5px solid var(--line); border-radius: 14px; padding: 14px; text-align: left; background: var(--surface); cursor: pointer; }
.fp .opt:hover { border-color: var(--accent); }
.fp .opt b { display: block; }
.fp label { font-weight: 600; font-size: 14px; display: block; margin: 12px 0 6px; }
.fp select, .fp input[type=email] { width: 100%; min-height: 46px; border: 1.5px solid var(--line); border-radius: 12px; padding: 0 12px; background: #fff; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.seg button { border: 1.5px solid var(--line); background: #fff; border-radius: 999px; padding: 0 14px; min-height: 40px; cursor: pointer; font-weight: 500; }
.seg button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.scan { text-align: center; padding: 18px; border-radius: 16px; background: #111; color: #fff; }
.scan .foot { width: 120px; height: 200px; margin: 10px auto; border: 2px dashed #7B6CFF; border-radius: 60px 60px 50px 50px; position: relative; overflow: hidden; }
.scan .foot::after { content: ""; position: absolute; left: 0; right: 0; height: 3px; background: #7B6CFF; box-shadow: 0 0 14px #7B6CFF; animation: sweep 1.4s ease-in-out infinite; }
@keyframes sweep { 0% { top: 0 } 50% { top: 97% } 100% { top: 0 } }
@media (prefers-reduced-motion: reduce) { .scan .foot::after { animation: none; top: 50%; } .ov-panel { transition: none; } }
.passport-pill { display: inline-flex; align-items: center; gap: 6px; background: var(--fit-soft); color: var(--fit); border-radius: 999px; padding: 4px 10px; font-weight: 600; font-size: 13px; }

/* cart drawer */
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(380px, 100vw); background: var(--surface); z-index: 50; box-shadow: -10px 0 40px rgba(0,0,0,.15); display: flex; flex-direction: column; }
.drawer header { display: flex; justify-content: space-between; align-items: center; padding: 16px; border-bottom: 1px solid var(--line); }
.drawer .items { flex: 1; overflow-y: auto; padding: 8px 16px; }
.drawer .line { display: grid; grid-template-columns: 64px 1fr auto; gap: 10px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); }
.drawer .line .img { background: var(--soft); border-radius: 8px; padding: 4px; }
.drawer footer { padding: 16px; border-top: 1px solid var(--line); }
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 45; }

/* ---------- AI assistant view ---------- */
.ai { max-width: 1240px; margin: 0 auto; padding: 22px 16px 40px; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 18px; }
@media (max-width: 900px) { .ai { grid-template-columns: 1fr; } }
.chat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); display: flex; flex-direction: column; min-height: 70vh; }
.chat header { padding: 14px 18px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.chat .msgs { flex: 1; padding: 18px; display: flex; flex-direction: column; gap: 14px; overflow-y: auto; }
.msg { max-width: 88%; }
.msg.u { align-self: flex-end; background: var(--ink); color: #fff; border-radius: 18px 18px 4px 18px; padding: 10px 14px; }
.msg.a { align-self: flex-start; }
.msg.a .bub { background: var(--soft); border-radius: 18px 18px 18px 4px; padding: 12px 14px; }
.msg.a .via { font-size: 12px; color: var(--muted); margin-top: 4px; }
.msg .cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; margin-top: 10px; }
.msg .cards .mini { padding: 8px; }
.chat form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.chat form input { flex: 1; min-height: 46px; border: 1.5px solid var(--line); border-radius: 999px; padding: 0 16px; }
.log { background: var(--demo); color: #E6E6EE; border-radius: var(--r-lg); padding: 16px; font-size: 13px; overflow: hidden; display: flex; flex-direction: column; max-height: 80vh; }
.log h3 { margin: 0 0 4px; font-size: 15px; }
.log .entries { overflow-y: auto; display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.log .e { background: var(--demo-2); border-radius: 12px; padding: 10px 12px; }
.log .e .t { color: #A99FFF; font-weight: 700; font-family: ui-monospace, Menlo, monospace; font-size: 12.5px; }
.log pre { margin: 6px 0 0; white-space: pre-wrap; word-break: break-word; font-size: 11.5px; color: #C9C9D4; max-height: 180px; overflow: auto; }
.log .ok { color: #6EE7B7; } .log .bad { color: #FCA5A5; }

/* ---------- merchant console ---------- */
.mc { max-width: 1240px; margin: 0 auto; padding: 22px 16px 40px; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 18px; }
@media (max-width: 820px) { .mc { grid-template-columns: 1fr; } }
.mc nav { display: flex; flex-direction: column; gap: 4px; position: sticky; top: 70px; align-self: start; }
@media (max-width: 820px) { .mc nav { flex-direction: row; overflow-x: auto; position: static; } }
.mc nav button { text-align: left; border: 0; background: none; padding: 10px 12px; border-radius: 10px; cursor: pointer; font-weight: 600; color: var(--muted); white-space: nowrap; min-height: 40px; }
.mc nav button[aria-current="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 0 var(--line); }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 20px; margin-bottom: 16px; }
.panel h2 { margin: 0 0 4px; font-size: 20px; letter-spacing: -.01em; }
.panel .sub { color: var(--muted); margin: 0 0 14px; font-size: 14.5px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.kpi { background: var(--bg); border-radius: 14px; padding: 14px; }
.kpi .k { font-size: 13px; color: var(--muted); }
.kpi .v { font-size: 26px; font-weight: 700; letter-spacing: -.01em; }
.kpi .d { font-size: 13px; font-weight: 600; }
.kpi .d.up { color: var(--fit); } .kpi .d.down { color: var(--fit); }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 8px; border-bottom: 1px solid var(--line); }
.tbl td { padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.tbl tr.click { cursor: pointer; } .tbl tr.click:hover td { background: var(--bg); }
.score { display: inline-flex; align-items: center; gap: 8px; }
.score .bar { width: 90px; height: 8px; border-radius: 99px; background: var(--soft); overflow: hidden; }
.score .bar i { display: block; height: 100%; border-radius: 99px; }
.tw { overflow-x: auto; }
.illus { background: var(--warn-soft); color: var(--warn); border-radius: 12px; padding: 10px 12px; font-size: 13.5px; font-weight: 600; margin-bottom: 14px; }
.fields { display: grid; gap: 8px; }
.fields .f { display: grid; grid-template-columns: 26px 170px 1fr auto; gap: 10px; align-items: start; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
@media (max-width: 640px) { .fields .f { grid-template-columns: 22px 1fr; } .fields .f .src, .fields .f .val { grid-column: 2; } }
.fields .src { font-size: 12px; color: var(--muted); }
.formula { font-family: ui-monospace, Menlo, monospace; background: var(--bg); padding: 10px 12px; border-radius: 10px; font-size: 13px; overflow-x: auto; }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 140px; padding-top: 10px; }
.bars div { flex: 1; background: var(--accent); border-radius: 6px 6px 0 0; position: relative; min-width: 14px; }
.bars div span { position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--muted); }
.bars div.rec { background: var(--fit); }
.toggle { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.switch { width: 46px; height: 28px; border-radius: 99px; background: #CFCDC7; position: relative; border: 0; cursor: pointer; flex: none; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 22px; height: 22px; border-radius: 50%; background: #fff; transition: transform .15s; }
.switch[aria-checked="true"] { background: var(--fit); }
.switch[aria-checked="true"]::after { transform: translateX(18px); }
.toast { position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 12px 18px; border-radius: 999px; z-index: 60; font-weight: 500; max-width: calc(100vw - 32px); }
.intro { max-width: 1240px; margin: 14px auto 0; padding: 0 16px; }
.intro .box { background: var(--accent-soft); color: #2B2280; border-radius: 14px; padding: 12px 16px; font-size: 14.5px; display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; }