/**
 * 파일명: main.css
 * 파일경로: /home/qrcanvas/public_html/assets/css/
 * 기능: QR Canvas 메인 페이지 스타일
 * 작성일: 2026-05-18
 * 수정일: 2026-07-01
 */

:root {
    --qrc-bg: #f7f8fb;
    --qrc-surface: #ffffff;
    --qrc-text: #1d2433;
    --qrc-muted: #667085;
    --qrc-line: #e5e7eb;
    --qrc-primary: #2563eb;
    --qrc-primary-dark: #1d4ed8;
    --qrc-soft: #eef4ff;
    --qrc-radius: 24px;
    --qrc-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* 페이지 높이에 따라 스크롤바가 생기거나 사라질 때 발생하는
       viewport 폭 변화(CLS)를 방지 — 항상 스크롤바 공간을 예약 */
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
    color: var(--qrc-text);
    background: var(--qrc-bg);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
}

.qrc-container {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.qrc-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.86);
    border-bottom: 1px solid rgba(229, 231, 235, 0.9);
    backdrop-filter: blur(16px);
}

.qrc-header__inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.qrc-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.qrc-logo__img {
    height: 38px;
    width: auto;
    display: block;
    flex-shrink: 0;
}

.qrc-logo__text {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.04em;
    background: linear-gradient(120deg, #1e40af 0%, #2563eb 55%, #3b82f6 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: background-position 0.4s ease;
}

.qrc-logo:hover .qrc-logo__text {
    background-position: right center;
}

/* ── 햄버거 버튼 (PC: 숨김) ─────────────────────────────────── */
.qrc-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s ease;
}

.qrc-hamburger:hover {
    background: var(--qrc-soft);
}

.qrc-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--qrc-text);
    border-radius: 2px;
    -webkit-transition: -webkit-transform 0.25s ease, opacity 0.2s ease;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

/* flex gap 미지원 구형 브라우저 대비 — 막대 간격을 margin으로 */
.qrc-hamburger span + span {
    margin-top: 5px;
}

/* 모바일 메뉴 열렸을 때 햄버거 → X 변환 */
.qrc-hamburger.is-open span:nth-child(1) {
    -webkit-transform: translateY(7px) rotate(45deg);
    transform: translateY(7px) rotate(45deg);
}
.qrc-hamburger.is-open span:nth-child(2) {
    opacity: 0;
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
}
.qrc-hamburger.is-open span:nth-child(3) {
    -webkit-transform: translateY(-7px) rotate(-45deg);
    transform: translateY(-7px) rotate(-45deg);
}


.qrc-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    color: var(--qrc-muted);
    font-size: 15px;
    font-weight: 600;
}

/* 모든 nav 링크 공통 — position 확보 (color는 전역 a { color: inherit }에 위임) */
.qrc-nav > a {
    position: relative;
    text-decoration: none;
    transition: color 0.2s ease;
}

/* 일반 링크 (버튼 제외) — 높이 고정으로 페이지별 편차 제거 */
.qrc-nav > a:not(.qrc-btn) {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 2px;
    line-height: 1;
}

/* 슬라이딩 언더라인 애니메이션 */
.qrc-nav > a:not(.qrc-btn)::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 2px;
    right: 2px;
    height: 2px;
    background: var(--qrc-primary);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.qrc-nav > a:not(.qrc-btn):hover {
    color: var(--qrc-primary);
}

.qrc-nav > a:not(.qrc-btn):hover::after {
    transform: scaleX(1);
}

/* muted 링크 (계정명, 로그아웃) — 언더라인 굵기 그대로, 투명도만 추가 */
.qrc-nav-link-muted {
    opacity: 0.7;
}

.qrc-hero {
    padding: 86px 0 72px;
}

.qrc-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    gap: 56px;
    align-items: center;
}

.qrc-eyebrow {
    margin: 0 0 14px;
    color: var(--qrc-primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.qrc-hero h1 {
    margin: 0;
    font-size: clamp(36px, 5vw, 58px);
    line-height: 1.1;
    letter-spacing: -0.05em;
    text-wrap: balance;
}

.qrc-hero__desc {
    max-width: 640px;
    margin: 24px 0 0;
    color: var(--qrc-muted);
    font-size: 18px;
    word-break: keep-all;
}

.qrc-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.qrc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 800;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.qrc-btn:hover {
    transform: translateY(-2px);
}

.qrc-btn--primary {
    color: #fff;
    background: var(--qrc-primary);
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.25);
}

.qrc-btn--ghost {
    color: var(--qrc-text);
    background: #fff;
    border: 1px solid var(--qrc-line);
}

.qrc-hero__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 26px;
}

.qrc-hero__badges span {
    padding: 8px 12px;
    color: var(--qrc-muted);
    background: #fff;
    border: 1px solid var(--qrc-line);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
}

.qrc-content-meta {
    margin: 18px 0 0;
    color: var(--qrc-muted);
    font-size: 13px;
}

.qrc-content-meta a,
.qrc-text-link,
.qrc-section-link a {
    color: var(--qrc-primary-dark);
    font-weight: 700;
}

.qrc-content-meta a:hover,
.qrc-text-link:hover,
.qrc-section-link a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.qrc-preview {
    display: flex;
    justify-content: center;
}

.qrc-hero__img {
    width: 100%;
    height: auto;
    max-width: 540px;
    border-radius: 24px;
    box-shadow: var(--qrc-shadow);
    display: block;
}

.qrc-preview__card {
    width: min(100%, 430px);
    padding: 16px;
    background: #fff;
    border: 1px solid var(--qrc-line);
    border-radius: 32px;
    box-shadow: var(--qrc-shadow);
}

.qrc-preview__top {
    display: flex;
    gap: 7px;
    padding: 4px 4px 14px;
}

.qrc-preview__top span {
    width: 11px;
    height: 11px;
    background: #d0d5dd;
    border-radius: 999px;
}

.qrc-preview__canvas {
    min-height: 500px;
    padding: 44px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    text-align: center;
    background:
        radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.18), transparent 28%),
        linear-gradient(145deg, #eef4ff, #ffffff 55%, #e0f2fe);
    border-radius: 24px;
}

.qrc-preview__label {
    padding: 8px 14px;
    color: var(--qrc-primary);
    background: #fff;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 900;
}

.qrc-preview__qr {
    width: 168px;
    height: 168px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 18px;
    background: #fff;
    border-radius: 26px;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.08);
}

.qrc-preview__qr span {
    background:
        linear-gradient(90deg, #111827 45%, transparent 45% 58%, #111827 58%),
        linear-gradient(#111827 45%, transparent 45% 58%, #111827 58%);
    border-radius: 10px;
}

.qrc-preview__canvas h2 {
    margin: 12px 0 0;
    font-size: 30px;
    letter-spacing: -0.04em;
}

.qrc-preview__canvas p {
    margin: 0;
    color: var(--qrc-muted);
    font-weight: 600;
}

.qrc-section {
    padding: 78px 0;
}

.qrc-answer-summary {
    padding-top: 0;
    background: #fff;
}

.qrc-answer-summary__inner {
    max-width: 940px;
    margin: 0 auto;
    padding: 34px 38px;
    background: var(--qrc-soft);
    border: 1px solid rgba(37, 99, 235, 0.18);
    border-radius: var(--qrc-radius);
}

.qrc-answer-summary h2 {
    margin: 0;
    font-size: clamp(24px, 3vw, 34px);
    letter-spacing: -0.04em;
}

.qrc-answer-summary__text {
    margin: 14px 0 12px;
    color: var(--qrc-muted);
    font-size: 17px;
    word-break: keep-all;
}

.qrc-section__head {
    max-width: 760px;
    margin-bottom: 30px;
}

.qrc-section__head h2 {
    margin: 0;
    font-size: clamp(26px, 3.2vw, 38px);
    line-height: 1.22;
    letter-spacing: -0.04em;
    text-wrap: balance;
}

.qrc-section__head p:not(.qrc-eyebrow) {
    margin: 14px 0 0;
    color: var(--qrc-muted);
    font-size: 17px;
}

.qrc-start {
    background: #fff;
}

.qrc-type-grid,
.qrc-feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.qrc-type-card,
.qrc-feature-card {
    min-height: 150px;
    padding: 24px;
    text-align: left;
    background: var(--qrc-surface);
    border: 1px solid var(--qrc-line);
    border-radius: var(--qrc-radius);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.qrc-type-card {
    cursor: pointer;
    border-width: 2px;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.qrc-type-card:hover {
    border-color: rgba(37, 99, 235, 0.5);
    animation: qrc-border-pulse 1.1s ease-out forwards;
}

.qrc-type-card strong,
.qrc-feature-card h3 {
    display: block;
    margin: 0 0 10px;
    font-size: 20px;
    letter-spacing: -0.03em;
}

.qrc-type-card span,
.qrc-feature-card p {
    margin: 0;
    color: var(--qrc-muted);
    word-break: keep-all;
}

.qrc-templates {
    background: #fff;
}

.qrc-template-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

@keyframes qrc-border-pulse {
    0%   { box-shadow: 0 0 0 0   rgba(37, 99, 235, 0.5); }
    55%  { box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.18); }
    100% { box-shadow: 0 0 0 9px rgba(37, 99, 235, 0); }
}

.qrc-template-list > div,
.qrc-template-list > a {
    padding: 18px 20px;
    background: var(--qrc-soft);
    border: 1.5px solid rgba(37, 99, 235, 0.18);
    border-radius: 16px;
    color: var(--qrc-primary-dark);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    display: block;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.qrc-template-list > a:hover {
    border-color: rgba(37, 99, 235, 0.5);
    color: var(--qrc-primary);
    animation: qrc-border-pulse 1.1s ease-out forwards;
}
.qrc-template-list__more {
    text-align: center;
    margin-top: 28px;
}
.qrc-template-list__more a {
    font-weight: 700;
    color: var(--qrc-primary-dark);
    text-decoration: none;
    border-bottom: 1px solid currentColor;
    padding-bottom: 2px;
}

.qrc-process {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    padding: 0;
    margin: 0;
    list-style: none;
    counter-reset: process;
}

.qrc-process li {
    position: relative;
    min-height: 170px;
    padding: 26px;
    background: #fff;
    border: 1px solid var(--qrc-line);
    border-radius: var(--qrc-radius);
}

.qrc-process li::before {
    counter-increment: process;
    content: counter(process);
    display: inline-grid;
    width: 34px;
    height: 34px;
    margin-bottom: 22px;
    place-items: center;
    color: #fff;
    background: var(--qrc-primary);
    border-radius: 999px;
    font-weight: 900;
}

.qrc-process strong {
    display: block;
    margin-bottom: 8px;
    font-size: 19px;
}

.qrc-process span {
    color: var(--qrc-muted);
}

/* ── 프로세스 스텝 ────────────────────────────────────────── */
.qrc-section--bg {
    background: var(--qrc-soft);
}

.qrc-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    padding: 0;
    margin: 0;
    list-style: none;
    position: relative;
}

/* 원을 연결하는 수평 라인 */
.qrc-steps::before {
    content: '';
    position: absolute;
    top: 25px;
    left: calc(12.5%);
    right: calc(12.5%);
    height: 2px;
    background: var(--qrc-line);
    z-index: 0;
}

.qrc-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.qrc-step__num {
    position: relative;
    z-index: 1;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--qrc-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 900;
    color: var(--qrc-primary);
    margin-bottom: 24px;
    flex-shrink: 0;
}

.qrc-step strong {
    display: block;
    font-size: 17px;
    font-weight: 800;
    color: var(--qrc-text);
    margin-bottom: 10px;
}

.qrc-step p {
    color: var(--qrc-muted);
    font-size: 14px;
    line-height: 1.7;
    margin: 0;
}

.qrc-section-link {
    margin: 30px 0 0;
    text-align: center;
}

.qrc-home-faq {
    background: #fff;
}

.qrc-faq-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.qrc-faq-card {
    padding: 26px;
    background: var(--qrc-surface);
    border: 1px solid var(--qrc-line);
    border-radius: 20px;
}

.qrc-faq-card h3 {
    margin: 0 0 10px;
    font-size: 18px;
    letter-spacing: -0.02em;
}

.qrc-faq-card p {
    margin: 0;
    color: var(--qrc-muted);
    font-size: 15px;
    word-break: keep-all;
}

/* ── 푸터 ────────────────────────────────────────────────── */
.qrc-footer {
    padding: 64px 0 28px;
    color: rgba(255, 255, 255, 0.55);
    background: #0f1623;
}

.qrc-footer p { margin: 0; }

/* 상단: 브랜드 + 링크 컬럼 */
.qrc-footer__main {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 2fr);
    gap: 48px;
    padding-bottom: 44px;
}

/* 브랜드 영역 */
.qrc-footer__logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.qrc-footer__logo img { border-radius: 8px; }

.qrc-footer__tagline {
    margin: 16px 0 22px !important;
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.5);
}

.qrc-footer__cta {
    display: inline-block;
    padding: 11px 20px;
    border-radius: 999px;
    background: var(--qrc-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    transition: background 0.15s ease, transform 0.15s ease;
}

.qrc-footer__cta:hover {
    background: var(--qrc-primary-dark);
    transform: translateY(-2px);
}

/* 링크 컬럼 */
.qrc-footer__cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.qrc-footer__col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.qrc-footer__col h3 {
    margin: 0 0 4px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
}

.qrc-footer__col a {
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.15s ease;
}

.qrc-footer__col a:hover { color: #fff; }

/* 하단: 사업자 정보 + 카피라이트 */
.qrc-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px 24px;
    padding-top: 26px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.qrc-footer__biz {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.45);
}

.qrc-footer__copy {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}

.qrc-footer__biz a,
.qrc-footer__copy a {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.15s ease;
}

.qrc-footer__biz a:hover,
.qrc-footer__copy a:hover { color: #fff; }

@media (max-width: 820px) {
    .qrc-footer { padding: 48px 0 24px; }
    .qrc-footer__main {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}

@media (max-width: 560px) {
    .qrc-footer__cols { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
    .qrc-footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 980px) {
    .qrc-hero__grid {
        grid-template-columns: 1fr;
    }

    .qrc-type-grid,
    .qrc-feature-grid,
    .qrc-template-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qrc-steps {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 40px;
    }

    .qrc-faq-grid {
        grid-template-columns: 1fr;
    }

    .qrc-steps::before {
        /* 2열에서 상단 행 연결선만 표시 */
        right: 50%;
        left: 25%;
    }
}

@media (max-width: 720px) {
    .qrc-container {
        width: min(100% - 28px, 1180px);
    }

    .qrc-header__inner {
        min-height: 64px;
    }

    /* 햄버거 버튼 표시 */
    .qrc-hamburger {
        display: flex;
    }

    /* nav: 드롭다운 슬라이드 (기본 숨김) */
    .qrc-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        z-index: 19;
        display: flex;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.97);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--qrc-line);
        box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
        padding: 8px 20px 24px;
        -webkit-transform: translateY(-110%);
        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;
        -webkit-transition: -webkit-transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.22s ease;
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.22s ease;
    }

    .qrc-nav.is-open {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    /* 모바일 nav 링크 공통 리셋 (데스크탑 height/pseudo 해제, color 제외) */
    .qrc-nav > a {
        display: block;
        height: auto;
        padding: 14px 4px;
        font-size: 16px;
        font-weight: 600;
        border-bottom: 1px solid var(--qrc-line);
    }

    /* color는 버튼 제외 링크에만 적용 — .qrc-btn--primary color:#fff 보호 */
    .qrc-nav > a:not(.qrc-btn) {
        color: var(--qrc-text);
    }

    /* 모바일에서 슬라이딩 언더라인 비활성화 */
    .qrc-nav > a:not(.qrc-btn)::after {
        display: none;
    }

    .qrc-nav > a:last-child {
        border-bottom: none;
    }

    .qrc-nav > a:not(.qrc-btn):hover {
        color: var(--qrc-primary);
    }

    /* 회원가입 버튼은 모바일에서도 버튼 형태 유지 */
    .qrc-nav .qrc-btn--nav {
        display: inline-flex;
        margin-top: 16px;
        width: 100%;
        justify-content: center;
        border-bottom: none;
    }

    .qrc-hero {
        padding: 56px 0 48px;
    }

    .qrc-hero__desc {
        font-size: 16px;
    }

    .qrc-answer-summary__inner {
        padding: 26px 22px;
    }

    .qrc-answer-summary__text {
        font-size: 16px;
    }

    .qrc-preview__canvas {
        min-height: 420px;
        padding: 34px 20px;
    }

    .qrc-type-grid,
    .qrc-feature-grid {
        grid-template-columns: 1fr;
    }

    /* 템플릿은 모바일에서 2열 유지 (2×4 그리드) */
    .qrc-template-list {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 스텝도 모바일에서 2열 유지 */
    .qrc-steps {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 36px;
    }

    .qrc-steps::before {
        display: none;
    }
}

/* ── Scroll to Top 버튼 ─────────────────────────────────────── */
#scrollTopBtn {
    position: fixed;
    bottom: 28px;
    right: 24px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 990;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
}

#scrollTopBtn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#scrollTopBtn:hover {
    transform: translateY(-3px);
}

.scroll-top-bg {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: #111827;
    box-shadow: 0 4px 16px rgba(17, 24, 39, 0.36);
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

#scrollTopBtn:hover .scroll-top-bg {
    background: #1e293b;
    box-shadow: 0 6px 22px rgba(17, 24, 39, 0.5);
}

.scroll-progress-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.scroll-progress-track {
    fill: none;
    stroke: rgba(255, 255, 255, 0.18);
    stroke-width: 3;
}

.scroll-progress-fill {
    fill: none;
    stroke: #2563eb;   /* --qrc-primary */
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 113.1;
    stroke-dashoffset: 113.1;
    transition: stroke-dashoffset 0.12s linear;
}

.scroll-top-inner {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
    pointer-events: none;
    user-select: none;
}

.scroll-top-arrow {
    width: 14px;
    height: 14px;
    color: rgba(255, 255, 255, 0.95);
    display: block;
}

#scrollTopBtn:hover .scroll-top-arrow {
    animation: arrowBounce 0.45s ease forwards;
}

@keyframes arrowBounce {
    0%   { transform: translateY(0); }
    35%  { transform: translateY(-4px); }
    65%  { transform: translateY(-1px); }
    100% { transform: translateY(-2px); }
}

.scroll-top-pct {
    font-size: 9px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1;
    letter-spacing: -0.3px;
}

/* ── SEO 랜딩 페이지 공통 ──────────────────────────────────── */
.qrc-lp-hero {
    padding: 80px 0 64px;
    text-align: center;
}

.qrc-lp-hero h1 {
    margin: 0;
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1.1;
    letter-spacing: -0.05em;
}

.qrc-lp-desc {
    margin: 20px auto 32px;
    max-width: 620px;
    font-size: 18px;
    color: var(--qrc-muted);
    line-height: 1.7;
    word-break: keep-all;
}

.qrc-lp-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.qrc-lp-section {
    padding: 72px 0;
}

.qrc-lp-section h2 {
    margin: 0 0 40px;
    font-size: clamp(24px, 3.5vw, 36px);
    letter-spacing: -0.04em;
    text-align: center;
}

.qrc-lp-section--alt {
    background: var(--qrc-bg);
}

.qrc-lp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.qrc-lp-card {
    background: #fff;
    border: 1px solid var(--qrc-line);
    border-radius: 20px;
    padding: 26px;
}

.qrc-lp-card strong {
    display: block;
    font-size: 17px;
    margin-bottom: 10px;
}

.qrc-lp-card p {
    margin: 0;
    font-size: 15px;
    color: var(--qrc-muted);
    line-height: 1.65;
    word-break: keep-all;
}

.qrc-lp-steps {
    max-width: 680px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.qrc-lp-steps li {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.qrc-lp-step-num {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--qrc-primary);
    color: #fff;
    font-weight: 900;
    font-size: 16px;
}

.qrc-lp-steps strong {
    display: block;
    font-size: 17px;
    margin-bottom: 6px;
}

.qrc-lp-steps p {
    margin: 0;
    font-size: 15px;
    color: var(--qrc-muted);
    line-height: 1.6;
    word-break: keep-all;
}

.qrc-lp-faq {
    max-width: 720px;
    margin: 0 auto;
}

.qrc-lp-faq h2 { text-align: center; }

.qrc-lp-faq-item {
    border-top: 1px solid var(--qrc-line);
    padding: 22px 0;
}

.qrc-lp-faq-item h3 {
    margin: 0 0 10px;
    font-size: 17px;
}

.qrc-lp-faq-item p {
    margin: 0;
    font-size: 15px;
    color: var(--qrc-muted);
    line-height: 1.7;
    word-break: keep-all;
}

.qrc-lp-cta {
    padding: 80px 0;
    text-align: center;
    background: var(--qrc-primary);
    color: #fff;
}

.qrc-lp-cta h2 {
    margin: 0 0 12px;
    font-size: clamp(24px, 3.5vw, 36px);
    letter-spacing: -0.04em;
}

.qrc-lp-cta p {
    margin: 0 0 28px;
    font-size: 17px;
    opacity: 0.85;
}

.qrc-lp-cta .qrc-btn--primary {
    background: #fff;
    color: var(--qrc-primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

@media (max-width: 900px) {
    .qrc-lp-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    .qrc-lp-hero  { padding: 52px 0 44px; }
    .qrc-lp-section { padding: 52px 0; }
    .qrc-lp-desc  { font-size: 16px; }
}

/* ─── 업데이트 내역 (changelog) ───────────────────────────── */
.qrc-changelog {
    max-width: 760px;
    margin: 0 auto;
}
.qrc-cl-year h2 {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.3px;
    margin: 28px 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--qrc-line);
}
.qrc-cl-year:first-child h2 {
    margin-top: 0;
}
.qrc-cl-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.qrc-cl-item {
    display: flex;
    gap: 18px;
    padding: 16px 0;
    border-bottom: 1px solid var(--qrc-line);
}
.qrc-cl-item:last-child {
    border-bottom: 0;
}
.qrc-cl-meta {
    flex: 0 0 118px;
    display: flex;
    flex-direction: column;
    gap: 7px;
    align-items: flex-start;
}
.qrc-cl-meta time {
    font-size: 13px;
    color: var(--qrc-muted);
    font-variant-numeric: tabular-nums;
}
.qrc-cl-type {
    font-size: 11px;
    font-weight: 700;
    border-radius: 999px;
    padding: 3px 11px;
    color: #fff;
}
.qrc-cl-type--launch  { background: #2563eb; }
.qrc-cl-type--feature { background: #16a34a; }
.qrc-cl-type--improve { background: #0ea5e9; }
.qrc-cl-type--fix     { background: #d97706; }
.qrc-cl-body {
    flex: 1;
    min-width: 0;
}
.qrc-cl-title {
    font-size: 16px;
    font-weight: 700;
    margin: 0 0 5px;
    line-height: 1.45;
    color: var(--qrc-text);
}
.qrc-cl-desc {
    font-size: 14px;
    color: var(--qrc-muted);
    margin: 0;
    line-height: 1.7;
}
@media (max-width: 560px) {
    .qrc-cl-item { flex-direction: column; gap: 8px; }
    .qrc-cl-meta { flex-direction: row; align-items: center; flex-basis: auto; }
}

/* ─── 메인 Quick Answer 핵심 요약 목록 ─────────────────────── */
.qrc-answer-summary__facts {
    list-style: none;
    margin: 18px 0 0;
    padding: 0;
    display: grid;
    gap: 9px;
}
.qrc-answer-summary__facts li {
    position: relative;
    padding-left: 18px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--qrc-text);
}
.qrc-answer-summary__facts li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--qrc-primary);
}
.qrc-answer-summary__cta {
    margin-top: 24px;
}

/* ─── 회원 혜택 비교 (membership) ──────────────────────────── */
.qrc-member__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}
.qrc-member__card {
    position: relative;
    background: #fff;
    border: 1px solid var(--qrc-line);
    border-radius: 16px;
    padding: 28px 26px;
}
.qrc-member__card--featured {
    border: 2px solid var(--qrc-primary);
    box-shadow: 0 16px 40px rgba(37, 99, 235, 0.12);
}
.qrc-member__badge {
    position: absolute;
    top: -12px;
    left: 26px;
    background: var(--qrc-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    border-radius: 999px;
    padding: 4px 12px;
}
.qrc-member__card h3 {
    font-size: 19px;
    font-weight: 800;
    margin: 0 0 4px;
    color: var(--qrc-text);
}
.qrc-member__price {
    font-size: 14px;
    color: var(--qrc-muted);
    margin: 0 0 16px;
}
.qrc-member__card--featured .qrc-member__price {
    color: var(--qrc-primary-dark);
    font-weight: 700;
}
.qrc-member__list {
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
    display: grid;
    gap: 10px;
}
.qrc-member__list li {
    position: relative;
    padding-left: 20px;
    font-size: 15px;
    line-height: 1.55;
    color: var(--qrc-text);
}
.qrc-member__list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--qrc-primary);
}
.qrc-member__card .qrc-btn {
    width: 100%;
    justify-content: center;
}
@media (max-width: 640px) {
    .qrc-member__grid { grid-template-columns: 1fr; }
}

/* ─── 섹션 '더 보기' 링크 → 아웃라인 필 버튼 ───────────────── */
.qrc-section-link a,
.qrc-template-list__more a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 22px;
    border: 1px solid var(--qrc-primary);
    border-radius: 999px;
    background: #fff;
    font-weight: 700;
    font-size: 15px;
    color: var(--qrc-primary-dark);
    text-decoration: none;
    transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
.qrc-section-link a:hover,
.qrc-template-list__more a:hover {
    background: var(--qrc-primary);
    color: #fff;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.22);
    transform: translateY(-1px);
}