:root {
    --qr-ink: #111827;
    --qr-muted: #64748b;
    --qr-line: rgba(30, 41, 59, .12);
    --qr-card: rgba(255, 255, 255, .9);
    --qr-blue: #2563eb;
    --qr-violet: #7c3aed;
    --qr-cyan: #06b6d4;
    --qr-green: #22c55e;
    --qr-warm: #fffaf0;
}

body.qr-page {
    min-height: 100vh;
    font-family: Inter, "Noto Sans KR", system-ui, sans-serif;
    color: var(--qr-ink);
    background:
        radial-gradient(circle at 0 18%, rgba(56, 189, 248, .18), transparent 28rem),
        radial-gradient(circle at 100% 5%, rgba(124, 58, 237, .16), transparent 25rem),
        linear-gradient(180deg, #f8fbff 0%, #ffffff 48%, var(--qr-warm) 100%);
}

.qr-header {
    background: rgba(255, 255, 255, .78);
    border-bottom: 1px solid var(--qr-line);
    backdrop-filter: blur(18px);
}

.qr-header .top-nav {
    gap: clamp(.7rem, 1.2vw, 1.1rem);
    flex-wrap: nowrap;
}

.qr-header .logo {
    text-decoration: none;
    white-space: nowrap;
}

.qr-header .tools-dropdown.mega-tools {
    right: 0;
    left: auto;
    width: min(980px, calc(100vw - 2rem));
    grid-template-columns: repeat(5, minmax(130px, 1fr));
}

.qr-header .tools-dropdown {
    max-height: min(72vh, 620px);
    overflow: auto;
}

.qr-header .ec-tool-search {
    min-width: min(12rem, 16vw);
}

.qr-main {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 1.4rem 0 4rem;
}

.qr-breadcrumb {
    display: flex;
    align-items: center;
    gap: .65rem;
    color: var(--qr-muted);
    font-size: .9rem;
    font-weight: 700;
}

.qr-breadcrumb a {
    color: inherit;
    text-decoration: none;
}

.qr-breadcrumb a:hover {
    color: var(--qr-blue);
}

.qr-hero {
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: 2.4rem 1rem 2.8rem;
}

.qr-hero-decoration {
    position: absolute;
    pointer-events: none;
    opacity: .65;
}

.left-dot {
    width: 11rem;
    height: 11rem;
    left: -7rem;
    top: 3rem;
    border: 1px solid rgba(37, 99, 235, .18);
    border-radius: 999px;
    background: radial-gradient(circle, rgba(37, 99, 235, .12), transparent 70%);
}

.right-grid {
    width: 16rem;
    height: 16rem;
    right: -6rem;
    top: -2rem;
    border-radius: 999px;
    background-image: radial-gradient(rgba(124, 58, 237, .22) 1px, transparent 1px);
    background-size: 13px 13px;
}

.qr-mini-flow {
    display: inline-flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: 1.2rem;
    color: var(--qr-blue);
}

.qr-mini-flow span {
    display: grid;
    place-items: center;
    width: 3rem;
    height: 3rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, .85);
    box-shadow: 0 14px 32px rgba(37, 99, 235, .12);
}

.qr-hero h1 {
    margin: 0;
    font-size: clamp(2.25rem, 6vw, 4.4rem);
    line-height: .98;
    letter-spacing: 0;
    font-weight: 900;
}

.qr-hero h1 span {
    color: var(--qr-blue);
}

.qr-hero p {
    max-width: 680px;
    margin: 1rem auto 0;
    color: #475569;
    font-size: 1.06rem;
    line-height: 1.65;
}

.qr-benefits {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 1.6rem;
}

.qr-benefits span {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .48rem .8rem;
    border: 1px solid rgba(37, 99, 235, .08);
    border-radius: 999px;
    color: #31559d;
    background: rgba(255, 255, 255, .72);
    font-weight: 800;
    font-size: .86rem;
}

.qr-workspace {
    margin-top: .5rem;
}

.qr-builder-card {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(310px, .95fr);
    overflow: hidden;
    border: 1px solid var(--qr-line);
    border-radius: 24px;
    background: rgba(255, 255, 255, .92);
    box-shadow: 0 26px 70px rgba(37, 99, 235, .1);
}

.qr-editor {
    min-width: 0;
    padding: 1.7rem;
}

.qr-preview-panel {
    min-width: 0;
    padding: 1.7rem;
    border-left: 1px solid var(--qr-line);
    background: linear-gradient(180deg, rgba(248, 250, 252, .65), rgba(255, 255, 255, .92));
}

.qr-type-tabs {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: .55rem;
    margin-bottom: 1.4rem;
}

.qr-type-tab {
    display: grid;
    place-items: center;
    gap: .4rem;
    min-height: 4.8rem;
    border: 1px solid transparent;
    border-radius: 14px;
    color: #334155;
    background: transparent;
    font-weight: 800;
    cursor: pointer;
    transition: transform .16s ease, background .16s ease, color .16s ease, box-shadow .16s ease;
}

.qr-type-tab i {
    font-size: 1.2rem;
}

.qr-type-tab:hover {
    transform: translateY(-2px);
    background: rgba(37, 99, 235, .07);
}

.qr-type-tab.active {
    color: white;
    background: linear-gradient(135deg, var(--qr-blue), var(--qr-violet));
    box-shadow: 0 16px 30px rgba(37, 99, 235, .2);
}

.qr-selected-type,
.qr-preview-header,
.qr-customize-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.qr-selected-type {
    padding: 1rem 0;
    border-top: 1px solid var(--qr-line);
}

.qr-selected-type span {
    color: var(--qr-blue);
    font-size: .78rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.qr-selected-type h2,
.qr-preview-header h2,
.qr-customize h3,
.qr-how h2,
.qr-everyone h2 {
    margin: 0;
    font-size: 1.05rem;
    letter-spacing: 0;
}

.qr-ghost-button,
.qr-preview-header button,
.qr-customize-header button {
    border: 1px solid var(--qr-line);
    border-radius: 10px;
    padding: .6rem .8rem;
    color: #334155;
    background: white;
    font-weight: 800;
    cursor: pointer;
}

.qr-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.qr-field.full {
    grid-column: 1 / -1;
}

.qr-field label {
    display: block;
    margin-bottom: .45rem;
    color: #1e293b;
    font-size: .86rem;
    font-weight: 900;
}

.qr-field input,
.qr-field textarea,
.qr-field select,
.qr-select {
    width: 100%;
    min-height: 3rem;
    border: 1px solid rgba(30, 41, 59, .14);
    border-radius: 12px;
    padding: .8rem .95rem;
    color: #0f172a;
    background: rgba(255, 255, 255, .82);
    font: inherit;
    font-weight: 650;
    outline: none;
}

.qr-field textarea {
    min-height: 7.5rem;
    resize: vertical;
}

.qr-field input:focus,
.qr-field textarea:focus,
.qr-field select:focus,
.qr-select:focus {
    border-color: rgba(37, 99, 235, .5);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
}

.qr-option-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .8rem;
    margin: 1.25rem 0;
}

.qr-checkbox {
    display: flex;
    align-items: center;
    gap: .65rem;
    color: #475569;
    font-size: .9rem;
    font-weight: 800;
}

.qr-checkbox input {
    width: 1rem;
    height: 1rem;
}

.qr-checkbox em,
.qr-design-tabs em,
.qr-format-row em {
    margin-left: .25rem;
    padding: .12rem .35rem;
    border-radius: 999px;
    color: var(--qr-violet);
    background: rgba(124, 58, 237, .11);
    font-size: .64rem;
    font-style: normal;
    font-weight: 900;
}

.qr-generate-button,
.qr-download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    width: 100%;
    min-height: 3.4rem;
    border: 0;
    border-radius: 12px;
    color: white;
    background: linear-gradient(135deg, #2563eb, #9333ea);
    box-shadow: 0 18px 34px rgba(37, 99, 235, .2);
    font-weight: 900;
    cursor: pointer;
}

.qr-safe-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.35rem;
    padding: 1.1rem;
    border: 1px solid rgba(37, 99, 235, .06);
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(37, 99, 235, .07), rgba(255, 255, 255, .76));
}

.qr-safe-card > span {
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    width: 3rem;
    height: 3rem;
    border-radius: 16px;
    color: white;
    background: linear-gradient(135deg, var(--qr-blue), var(--qr-violet));
}

.qr-safe-card strong {
    display: block;
    margin-bottom: .25rem;
}

.qr-safe-card p,
.qr-status {
    margin: 0;
    color: var(--qr-muted);
    font-size: .9rem;
    line-height: 1.55;
}

.qr-canvas-shell {
    position: relative;
    display: grid;
    place-items: center;
    width: min(100%, 330px);
    aspect-ratio: 1;
    margin: 1rem auto .85rem;
    border: 1px solid rgba(30, 41, 59, .08);
    border-radius: 18px;
    background: white;
    box-shadow: 0 18px 45px rgba(15, 23, 42, .08);
    overflow: hidden;
    padding: 1rem;
}

#qrCanvas {
    width: min(100%, 270px) !important;
    max-width: 100% !important;
    height: auto !important;
    aspect-ratio: 1;
    image-rendering: crisp-edges;
}

.qr-logo-mark {
    position: absolute;
    display: grid;
    place-items: center;
    width: 3.5rem;
    height: 3.5rem;
    border: 6px solid white;
    border-radius: 16px;
    background: white;
    box-shadow: 0 10px 28px rgba(37, 99, 235, .2);
    pointer-events: none;
}

.qr-logo-mark img {
    width: 100%;
    height: 100%;
}

.qr-status {
    min-height: 1.4rem;
    text-align: center;
}

.qr-customize {
    margin-top: 1.5rem;
    padding-top: 1.3rem;
    border-top: 1px solid var(--qr-line);
}

.qr-design-tabs,
.qr-format-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .45rem;
    margin: .85rem 0 1rem;
}

.qr-format-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qr-design-tabs button,
.qr-format-row button {
    min-height: 2.6rem;
    border: 1px solid var(--qr-line);
    border-radius: 10px;
    background: white;
    color: #334155;
    font-weight: 900;
}

.qr-design-tabs button.active,
.qr-format-row button.active {
    color: var(--qr-blue);
    border-color: rgba(37, 99, 235, .35);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .07);
}

.qr-control-label {
    display: block;
    margin: .9rem 0 .45rem;
    color: #334155;
    font-size: .78rem;
    font-weight: 900;
}

.qr-color-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
}

.qr-color-swatches button,
.qr-color-input {
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--qr-line);
    border-radius: 8px;
    cursor: pointer;
}

.qr-color-swatches button.active {
    outline: 3px solid rgba(37, 99, 235, .2);
    outline-offset: 2px;
}

.qr-feature-strip,
.qr-everyone {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.25rem;
    padding: 1.2rem;
    border: 1px solid var(--qr-line);
    border-radius: 20px;
    background: rgba(255, 255, 255, .78);
}

.qr-feature-strip article,
.qr-everyone article {
    display: grid;
    grid-template-columns: 3rem 1fr;
    gap: .9rem;
    align-items: center;
}

.qr-feature-strip i,
.qr-everyone i {
    display: grid;
    place-items: center;
    width: 3rem;
    height: 3rem;
    border-radius: 16px;
    color: var(--qr-blue);
    background: rgba(37, 99, 235, .1);
}

.qr-feature-strip strong,
.qr-everyone strong {
    display: block;
}

.qr-feature-strip span,
.qr-everyone span,
.qr-everyone p {
    color: var(--qr-muted);
    font-size: .86rem;
    line-height: 1.45;
}

.qr-catalog {
    margin-top: 2.4rem;
}

.qr-category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.qr-category-card {
    border: 1px solid var(--qr-line);
    border-radius: 18px;
    padding: 1.05rem;
    background: rgba(255, 255, 255, .8);
    box-shadow: 0 18px 38px rgba(15, 23, 42, .04);
}

.qr-category-card h3 {
    display: flex;
    align-items: center;
    gap: .55rem;
    margin: 0 0 .8rem;
    font-size: 1rem;
}

.qr-category-card h3 i {
    color: var(--qr-blue);
}

.qr-type-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .55rem;
}

.qr-type-list button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .6rem;
    min-height: 2.75rem;
    border: 1px solid rgba(30, 41, 59, .09);
    border-radius: 12px;
    color: #1f2937;
    background: rgba(248, 250, 252, .78);
    font-weight: 850;
    cursor: pointer;
    text-align: left;
}

.qr-type-list button:hover {
    color: var(--qr-blue);
    border-color: rgba(37, 99, 235, .22);
    background: white;
}

.qr-how {
    margin-top: 2.2rem;
    text-align: center;
}

.qr-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.1rem;
}

.qr-steps article {
    padding: 1.2rem;
    border: 1px solid var(--qr-line);
    border-radius: 18px;
    background: rgba(255, 255, 255, .78);
    text-align: left;
}

.qr-steps b {
    display: grid;
    place-items: center;
    width: 2.6rem;
    height: 2.6rem;
    margin-bottom: .75rem;
    border-radius: 999px;
    color: var(--qr-blue);
    background: rgba(37, 99, 235, .1);
}

.qr-steps strong {
    display: block;
    margin-bottom: .35rem;
}

.qr-steps span {
    color: var(--qr-muted);
    line-height: 1.5;
}

.qr-everyone {
    grid-template-columns: 1.45fr repeat(3, minmax(0, 1fr));
    margin-top: 1.3rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, .08), rgba(6, 182, 212, .05), rgba(255, 255, 255, .85));
}

@media (max-width: 980px) {
    .qr-header .top-nav {
        flex-wrap: wrap;
        justify-content: flex-start !important;
    }

    .qr-header .ec-tool-search {
        order: 20;
        width: min(100%, 18rem);
    }

    .qr-builder-card,
    .qr-category-grid,
    .qr-feature-strip,
    .qr-everyone {
        grid-template-columns: 1fr;
    }

    .qr-preview-panel {
        border-top: 1px solid var(--qr-line);
        border-left: 0;
    }

    .qr-type-tabs {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .qr-main {
        width: min(100% - 1rem, 1120px);
    }

    .qr-hero {
        padding: 1.7rem .35rem 2rem;
    }

    .qr-editor,
    .qr-preview-panel {
        padding: 1rem;
    }

    .qr-type-tabs,
    .qr-form,
    .qr-option-row,
    .qr-steps,
    .qr-type-list {
        grid-template-columns: 1fr;
    }

    .qr-builder-card,
    .qr-feature-strip,
    .qr-category-card,
    .qr-steps article,
    .qr-everyone {
        border-radius: 16px;
    }
}