:root {
  --ink: #17211c;
  --muted: #67716b;
  --paper: #f7f5ef;
  --card: #fffdf8;
  --line: #deddd5;
  --green: #126b4c;
  --lime: #d9f05b;
  --orange: #ff7950;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
button { color: inherit; }

.site-header {
  height: 72px;
  padding: 0 max(24px, calc((100vw - 1240px) / 2));
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(247,245,239,.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 11px; color: inherit; text-decoration: none; font-size: 21px; font-weight: 700; letter-spacing: .08em; }
.brand-mark { width: 28px; height: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 3px; transform: rotate(3deg); }
.brand-mark i { display: block; border-radius: 50%; background: var(--green); }
.brand-mark i:nth-child(2) { background: var(--orange); }
.brand-mark i:nth-child(3) { background: var(--lime); }
.header-tag { margin-left: 22px; padding-left: 22px; border-left: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.help-button { margin-left: auto; background: transparent; border: 0; cursor: pointer; font-size: 13px; border-bottom: 1px solid currentColor; padding: 4px 0; }

main { max-width: 1240px; margin: auto; padding: 0 24px; }
.hero { padding: 72px 0 48px; position: relative; }
.eyebrow { margin: 0 0 12px; color: var(--green); font: 700 11px/1 "DM Sans", sans-serif; letter-spacing: .22em; }
.hero h1 { margin: 0; max-width: 760px; font-size: clamp(42px, 6vw, 74px); line-height: 1.1; letter-spacing: -.055em; font-weight: 700; }
.hero h1 em { color: var(--green); font-style: normal; }
.hero-copy { position: absolute; right: 0; bottom: 56px; width: 300px; margin: 0; color: var(--muted); line-height: 1.8; font-size: 15px; }

.workspace { min-height: 670px; display: grid; grid-template-columns: 320px 1fr; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: var(--card); box-shadow: 0 18px 60px rgba(36,47,40,.07); }
.control-panel { padding: 28px; border-right: 1px solid var(--line); background: #fbfaf5; }
.step-heading { display: flex; gap: 13px; align-items: flex-start; margin-bottom: 20px; }
.step-heading > span { display: grid; place-items: center; width: 30px; height: 30px; flex: none; border-radius: 50%; background: var(--ink); color: white; font: 600 11px "DM Sans"; }
.step-heading div { display: flex; flex-direction: column; gap: 3px; }
.step-heading strong { font-size: 14px; }
.step-heading small, .toggle-row small { color: var(--muted); font-size: 11px; }
.step-heading.compact { margin-top: 30px; padding-top: 27px; border-top: 1px solid var(--line); }
.step-heading.compact > span { color: var(--ink); background: var(--lime); }

.upload-zone { height: 144px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 7px; border: 1.5px dashed #aab2ac; border-radius: 13px; cursor: pointer; transition: .2s ease; background: rgba(255,255,255,.55); text-align: center; }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--green); background: #f0f6ed; transform: translateY(-1px); }
.upload-zone input { display: none; }
.upload-zone strong { font-size: 13px; }
.upload-zone small { color: var(--muted); font-size: 10px; }
.upload-icon { width: 34px; height: 34px; display: grid; place-items: center; color: var(--green); background: #dcecdf; border-radius: 50%; font-size: 20px; line-height: 1; }
.controls { transition: opacity .2s; }
.controls.is-disabled { opacity: .38; pointer-events: none; filter: grayscale(.4); }
.control-group { margin: 23px 0; }
.label-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.label-row label, .control-label { font-size: 12px; font-weight: 600; }
.label-row output { padding: 3px 8px; color: var(--green); background: #e3eee5; border-radius: 5px; font: 700 11px "DM Sans"; }
input[type="range"] { width: 100%; height: 3px; appearance: none; background: linear-gradient(90deg,var(--green) 28%,#d8d9d2 28%); border-radius: 2px; outline: none; }
input[type="range"]::-webkit-slider-thumb { appearance: none; width: 16px; height: 16px; border-radius: 50%; background: var(--card); border: 4px solid var(--green); cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,.15); }
.range-hints { display: flex; justify-content: space-between; color: #919a94; font-size: 9px; margin-top: 7px; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; padding: 3px; margin-top: 10px; background: #ebeae4; border-radius: 8px; }
.segmented button { border: 0; border-radius: 6px; padding: 7px; background: transparent; cursor: pointer; font-size: 11px; }
.segmented button.active { background: var(--card); color: var(--green); font-weight: 700; box-shadow: 0 1px 4px rgba(0,0,0,.07); }
.toggle-row { padding: 13px 0; border-top: 1px solid #e8e7df; display: flex; align-items: center; justify-content: space-between; }
.toggle-row div { display: flex; flex-direction: column; gap: 2px; }
.toggle-row strong { font-size: 12px; }
.switch input { display: none; }
.switch span { display: block; width: 34px; height: 19px; padding: 2px; border-radius: 99px; background: #cfd2cd; cursor: pointer; transition: .2s; }
.switch span::after { content: ""; display: block; width: 15px; height: 15px; border-radius: 50%; background: white; box-shadow: 0 1px 3px rgba(0,0,0,.2); transition: .2s; }
.switch input:checked + span { background: var(--green); }
.switch input:checked + span::after { transform: translateX(15px); }

.preview-panel { min-width: 0; display: grid; grid-template-rows: 68px 1fr 82px; }
.preview-toolbar { display: flex; align-items: center; justify-content: space-between; padding: 0 24px; border-bottom: 1px solid var(--line); }
.preview-toolbar > div:first-child { display: grid; grid-template-columns: 10px auto; column-gap: 9px; align-items: center; }
.preview-toolbar strong { font-size: 12px; }
.preview-toolbar small { grid-column: 2; margin-top: 1px; color: var(--muted); font-size: 10px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #b6bbb7; }
.has-image .status-dot { background: #43ae72; box-shadow: 0 0 0 4px #e2f2e8; }
.zoom-controls { display: flex; align-items: center; gap: 7px; }
.zoom-controls button { width: 27px; height: 27px; border: 1px solid var(--line); border-radius: 6px; background: transparent; cursor: pointer; }
.zoom-controls span { min-width: 45px; text-align: center; color: var(--muted); font: 600 10px "DM Sans"; }
.canvas-stage { min-height: 500px; position: relative; overflow: auto; display: grid; place-items: center; padding: 34px; background-color: #eeede7; background-image: radial-gradient(#d3d2cb 1px, transparent 1px); background-size: 18px 18px; }
.empty-state { display: flex; flex-direction: column; align-items: center; color: var(--muted); }
.empty-state strong { margin-top: 18px; color: #4f5a54; font-size: 13px; }
.empty-state span { margin-top: 5px; font-size: 10px; }
.empty-beads { width: 88px; display: grid; grid-template-columns: repeat(3,1fr); gap: 5px; transform: rotate(-3deg); opacity: .75; }
.empty-beads i { aspect-ratio: 1; border-radius: 50%; background: #d1d5cd; box-shadow: inset 0 0 0 7px #e7e8e2; }
.empty-beads i:nth-child(2), .empty-beads i:nth-child(6) { background: #b9d3c1; }
#beadCanvas { display: none; max-width: none; background: white; box-shadow: 0 10px 35px rgba(35,45,39,.18); image-rendering: pixelated; transform-origin: center; transition: width .15s ease; }
.has-image #beadCanvas { display: block; }
.has-image .empty-state { display: none; }
.summary { display: grid; grid-template-columns: repeat(3,1fr) 190px; align-items: center; padding: 12px 18px 12px 24px; border-top: 1px solid var(--line); }
.summary > div { display: flex; flex-direction: column; gap: 3px; border-right: 1px solid var(--line); padding-right: 18px; margin-right: 18px; }
.summary small { color: var(--muted); font-size: 9px; }
.summary strong { font: 700 14px "DM Sans", "Noto Sans SC"; }
.primary-button { height: 46px; border: 0; border-radius: 10px; color: white; background: var(--green); font-size: 12px; font-weight: 700; cursor: pointer; box-shadow: 0 7px 18px rgba(18,107,76,.18); }
.primary-button span { margin-left: 14px; font-size: 17px; }
.primary-button:disabled { cursor: not-allowed; background: #9ba39e; box-shadow: none; }

.palette-section { padding: 80px 0; }
.section-title { display: flex; justify-content: space-between; align-items: end; margin-bottom: 27px; }
.section-title h2 { margin: 0; font-size: 30px; letter-spacing: -.04em; }
.section-title > p { max-width: 330px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.palette-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.color-card { min-width: 0; display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 12px; padding: 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,253,248,.55); }
.color-swatch { width: 42px; height: 42px; border-radius: 50%; box-shadow: inset 0 0 0 11px rgba(255,255,255,.25), 0 2px 5px rgba(0,0,0,.1); }
.color-card div:nth-child(2) { min-width: 0; display: flex; flex-direction: column; }
.color-card strong { font: 700 12px "DM Sans"; }
.color-card small { color: var(--muted); font-size: 9px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.color-card > span { color: var(--green); font: 700 11px "DM Sans"; }

footer { max-width: 1240px; margin: 0 auto; padding: 28px 24px 38px; border-top: 1px solid var(--line); display: flex; align-items: center; gap: 22px; color: var(--muted); }
footer span { color: var(--ink); font: 700 11px "DM Sans"; letter-spacing: .15em; }
footer p, footer small { margin: 0; font-size: 10px; }
footer small { margin-left: auto; }

dialog { width: min(500px, calc(100% - 32px)); border: 0; border-radius: 18px; padding: 35px; color: var(--ink); background: var(--card); box-shadow: 0 24px 80px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(18,25,21,.55); backdrop-filter: blur(3px); }
dialog h2 { margin: 0 0 25px; font-size: 27px; }
.dialog-close { position: absolute; right: 17px; top: 14px; border: 0; background: transparent; font-size: 25px; cursor: pointer; }
dialog ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 20px; }
dialog li { display: flex; gap: 14px; }
dialog li > span { width: 28px; height: 28px; display: grid; place-items: center; flex: none; border-radius: 50%; background: var(--lime); font: 700 11px "DM Sans"; }
dialog li strong { font-size: 13px; }
dialog li p { margin: 4px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }

@media (max-width: 900px) {
  .hero-copy { position: static; margin-top: 24px; width: auto; max-width: 500px; }
  .workspace { grid-template-columns: 1fr; }
  .control-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .preview-panel { min-height: 650px; }
  .palette-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .site-header { height: 62px; padding: 0 17px; }
  .header-tag { display: none; }
  main { padding: 0 14px; }
  .hero { padding: 50px 3px 35px; }
  .hero h1 { font-size: 42px; }
  .workspace { border-radius: 14px; }
  .control-panel { padding: 22px; }
  .preview-panel { grid-template-rows: 62px 1fr auto; }
  .canvas-stage { min-height: 420px; padding: 20px; }
  .summary { grid-template-columns: repeat(3,1fr); gap: 10px; padding: 15px; }
  .summary > div { margin: 0; padding: 0; }
  .primary-button { grid-column: 1/-1; }
  .palette-grid { grid-template-columns: 1fr; }
  .section-title { align-items: start; flex-direction: column; }
  footer { flex-wrap: wrap; }
  footer small { width: 100%; margin-left: 0; }
}

/* 2026 visual refresh */
:root {
  --paper: #f4f3ed;
  --card: #fffefa;
  --line: #d9ddd5;
  --green: #087a55;
  --green-dark: #075f44;
  --green-soft: #e1f1e8;
  --lime: #dff25b;
  --orange: #ff7450;
  --shadow-lg: 0 28px 90px rgba(24, 49, 38, .12), 0 3px 12px rgba(24, 49, 38, .05);
}

body {
  background:
    radial-gradient(circle at 9% 7%, rgba(223,242,91,.16), transparent 21rem),
    radial-gradient(circle at 93% 18%, rgba(255,116,80,.08), transparent 24rem),
    var(--paper);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .28;
  background-image: radial-gradient(rgba(17, 46, 34, .17) .55px, transparent .55px);
  background-size: 8px 8px;
  mask-image: linear-gradient(to bottom, black, transparent 55%);
}

.site-header {
  height: 78px;
  border-color: rgba(64,78,68,.12);
  background: rgba(248,247,242,.78);
  box-shadow: 0 1px 0 rgba(255,255,255,.7);
}

.brand { font-size: 22px; letter-spacing: .04em; }
.brand-mark { width: 32px; height: 32px; gap: 4px; filter: drop-shadow(0 3px 5px rgba(18,75,53,.15)); }
.brand-mark i { box-shadow: inset 0 -2px 3px rgba(0,0,0,.08), inset 0 2px 3px rgba(255,255,255,.3); }
.header-tag { color: #7d867f; }
.header-tag::after {
  content: "免费版";
  display: inline-block;
  margin-left: 10px;
  padding: 4px 8px;
  color: var(--green-dark);
  background: var(--green-soft);
  border: 1px solid rgba(8,122,85,.1);
  border-radius: 99px;
  font-size: 9px;
  font-weight: 700;
}
.help-button {
  padding: 8px 13px;
  border: 1px solid rgba(38,57,47,.15);
  border-radius: 99px;
  background: rgba(255,255,255,.5);
  transition: .2s ease;
}
.help-button:hover { color: var(--green); border-color: rgba(8,122,85,.35); background: white; transform: translateY(-1px); }

.hero {
  min-height: 360px;
  padding: 84px 0 60px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: end;
  gap: 64px;
  overflow: hidden;
}
.hero-main, .hero-side { position: relative; z-index: 2; }
.hero .eyebrow { display: inline-flex; align-items: center; gap: 9px; }
.hero .eyebrow::before { content: ""; width: 20px; height: 2px; background: var(--orange); border-radius: 2px; }
.hero h1 { max-width: 800px; font-size: clamp(48px, 5.9vw, 78px); line-height: 1.07; text-wrap: balance; }
.hero h1 em {
  background: linear-gradient(115deg, var(--green-dark), #13986b 70%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}
.hero-side { padding-bottom: 7px; }
.hero-copy { position: static; width: auto; margin: 0; font-size: 15px; line-height: 1.9; color: #59665f; }
.hero-features { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.hero-features span {
  padding: 6px 10px;
  color: #607068;
  border: 1px solid rgba(50,72,61,.12);
  border-radius: 99px;
  background: rgba(255,255,255,.55);
  font-size: 10px;
  font-weight: 600;
  box-shadow: 0 2px 7px rgba(43,62,52,.03);
}
.hero-decoration { position: absolute; top: 28px; right: 248px; width: 170px; height: 120px; opacity: .82; transform: rotate(8deg); }
.hero-decoration i { position: absolute; width: 22px; height: 22px; border-radius: 50%; background: #d8ddd6; box-shadow: inset 0 0 0 6px rgba(255,255,255,.55), 0 5px 12px rgba(35,57,46,.1); }
.hero-decoration i:nth-child(1) { left: 0; top: 47px; background: var(--orange); }
.hero-decoration i:nth-child(2) { left: 25px; top: 27px; background: var(--lime); }
.hero-decoration i:nth-child(3) { left: 50px; top: 47px; background: var(--green); }
.hero-decoration i:nth-child(4) { left: 75px; top: 27px; background: #8ecbb0; }
.hero-decoration i:nth-child(5) { left: 100px; top: 47px; background: var(--orange); }
.hero-decoration i:nth-child(6) { left: 125px; top: 27px; }
.hero-decoration i:nth-child(7) { left: 25px; top: 72px; background: #9fb4d0; }
.hero-decoration i:nth-child(8) { left: 50px; top: 92px; background: var(--lime); }
.hero-decoration i:nth-child(9) { left: 75px; top: 72px; background: #d9b7da; }
.hero-decoration i:nth-child(10) { left: 100px; top: 92px; background: var(--green); }
.hero-decoration i:nth-child(11) { left: 125px; top: 72px; background: #efaf70; }
.hero-decoration i:nth-child(12) { left: 150px; top: 92px; background: #9fb4d0; }

.workspace {
  min-height: 700px;
  grid-template-columns: 334px 1fr;
  border-color: rgba(53,72,62,.14);
  border-radius: 26px;
  box-shadow: var(--shadow-lg);
}
.control-panel { padding: 31px; background: linear-gradient(160deg, #fffefa, #f7f7f1); }
.step-heading > span { box-shadow: 0 5px 12px rgba(23,33,28,.18); }
.step-heading.compact > span { box-shadow: 0 5px 14px rgba(157,178,39,.18); }
.step-heading strong { font-size: 15px; letter-spacing: -.01em; }

.upload-zone {
  position: relative;
  height: 154px;
  overflow: hidden;
  border: 1px dashed rgba(8,122,85,.36);
  border-radius: 17px;
  background: linear-gradient(145deg, rgba(225,241,232,.75), rgba(255,255,255,.75));
}
.upload-zone::before, .upload-zone::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.upload-zone::before { width: 85px; height: 85px; left: -35px; top: -40px; background: rgba(223,242,91,.22); }
.upload-zone::after { width: 70px; height: 70px; right: -31px; bottom: -39px; background: rgba(255,116,80,.12); }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--green); background: linear-gradient(145deg,#dff1e7,#ffffff); box-shadow: 0 9px 24px rgba(8,122,85,.1); transform: translateY(-2px); }
.upload-zone.has-file { border-style: solid; background: linear-gradient(145deg,#e3f3e9,#f9fff8); }
.upload-icon { width: 42px; height: 42px; background: var(--green); color: white; box-shadow: 0 7px 17px rgba(8,122,85,.2); }
.upload-zone.has-file .upload-icon { background: var(--card); color: var(--green); border: 1px solid rgba(8,122,85,.15); box-shadow: 0 5px 14px rgba(8,122,85,.08); }
.upload-zone strong, .upload-zone small { position: relative; z-index: 1; max-width: 90%; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

.control-group { margin: 25px 0; }
.label-row output { padding: 5px 9px; border-radius: 7px; background: var(--green-soft); }
input[type="range"] { height: 4px; }
input[type="range"]::-webkit-slider-thumb { width: 18px; height: 18px; box-shadow: 0 2px 9px rgba(8,122,85,.2); }
.segmented { padding: 4px; border-radius: 10px; background: #ecece6; }
.segmented button { padding: 9px; border-radius: 7px; transition: .18s ease; }
.segmented button.active { box-shadow: 0 3px 10px rgba(31,49,39,.08); }
.toggle-row { padding: 14px 2px; }

.preview-panel { grid-template-rows: 74px 1fr 88px; background: var(--card); }
.preview-toolbar { padding: 0 27px; background: rgba(255,255,255,.42); }
.preview-toolbar strong { font-size: 13px; }
.status-dot { width: 8px; height: 8px; }
.zoom-controls { padding: 4px; border: 1px solid rgba(49,68,58,.1); border-radius: 10px; background: #f6f6f1; }
.zoom-controls button { border: 0; background: white; box-shadow: 0 1px 4px rgba(34,50,42,.08); transition: .15s; }
.zoom-controls button:hover { color: var(--green); transform: scale(1.06); }
.canvas-stage {
  min-height: 520px;
  padding: 42px;
  background-color: #e9ece6;
  background-image: radial-gradient(rgba(76,91,82,.2) .8px, transparent .8px), linear-gradient(145deg,rgba(255,255,255,.3),transparent 55%);
  background-size: 20px 20px, 100% 100%;
}
#beadCanvas { border: 7px solid white; border-radius: 3px; box-shadow: 0 22px 50px rgba(28,48,37,.22), 0 2px 8px rgba(28,48,37,.12); }
.empty-state { padding: 35px 46px; border: 1px solid rgba(63,81,71,.1); border-radius: 20px; background: rgba(255,255,255,.42); backdrop-filter: blur(5px); }
.empty-beads { width: 96px; gap: 6px; }
.empty-beads i { box-shadow: inset 0 0 0 8px rgba(255,255,255,.6), 0 5px 9px rgba(44,62,52,.08); }
.empty-beads i:nth-child(1), .empty-beads i:nth-child(9) { background: #efaf70; }
.empty-beads i:nth-child(5) { background: var(--lime); }

.summary { padding: 14px 19px 14px 27px; background: rgba(255,254,250,.96); }
.summary small { margin-bottom: 2px; letter-spacing: .06em; text-transform: uppercase; }
.summary strong { font-size: 16px; }
.primary-button { height: 50px; border-radius: 12px; background: linear-gradient(135deg,var(--green),var(--green-dark)); box-shadow: 0 9px 22px rgba(8,122,85,.22); transition: .18s ease; }
.primary-button:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 13px 27px rgba(8,122,85,.28); }
.primary-button:not(:disabled):active { transform: translateY(0); }

.palette-section { padding: 96px 0 105px; }
.section-title h2 { font-size: 36px; }
.palette-grid { gap: 12px; border: 0; }
.color-card {
  min-height: 76px;
  padding: 14px 16px;
  border: 1px solid rgba(57,74,65,.12);
  border-radius: 14px;
  background: rgba(255,254,250,.78);
  box-shadow: 0 5px 17px rgba(31,53,41,.035);
  transition: .18s ease;
}
.color-card:hover { transform: translateY(-2px); border-color: rgba(8,122,85,.22); box-shadow: 0 10px 24px rgba(31,53,41,.08); }
.color-swatch { width: 45px; height: 45px; box-shadow: inset 0 0 0 11px rgba(255,255,255,.22), 0 4px 10px rgba(0,0,0,.13); }
.color-card > span { padding: 5px 8px; border-radius: 99px; background: var(--green-soft); }

dialog { border: 1px solid rgba(255,255,255,.7); border-radius: 24px; box-shadow: 0 35px 100px rgba(8,27,18,.3); }

@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; gap: 24px; }
  .hero-side { max-width: 520px; }
  .hero-decoration { right: 20px; top: 45px; opacity: .45; }
}

@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; border-radius: 22px; }
  .control-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
  .control-panel > .step-heading, .control-panel > .upload-zone { grid-column: 1; }
  .control-panel > .controls { grid-column: 2; grid-row: 1 / span 2; }
  .step-heading.compact { margin-top: 0; padding-top: 0; border-top: 0; }
}

@media (max-width: 650px) {
  body::before { display: none; }
  .site-header { height: 66px; }
  .hero { min-height: auto; padding: 55px 2px 42px; gap: 22px; }
  .hero h1 { font-size: clamp(39px,12vw,52px); }
  .hero-decoration { display: none; }
  .hero-features { margin-top: 14px; }
  .workspace { border-radius: 18px; }
  .control-panel { display: block; padding: 23px; }
  .step-heading.compact { margin-top: 28px; padding-top: 26px; border-top: 1px solid var(--line); }
  .preview-panel { grid-template-rows: 66px 1fr auto; }
  .canvas-stage { min-height: 400px; padding: 18px; }
  .empty-state { padding: 28px 24px; text-align: center; }
  .summary { padding: 15px; }
  .palette-section { padding: 68px 0; }
  .section-title h2 { font-size: 31px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}