@charset "utf-8";

/* ============================================
   텔레그램 가입 알림 차단 & 유령 모드 가이드
   접두사: tg-stl- (기존 사이트 오염 방지)
   컬러 톤: 다크 틸(Dark Teal) + 슬레이트 그레이
============================================ */

:root {
    --tgs-teal: #0d9488;
    --tgs-teal-dark: #0f766e;
    --tgs-teal-deep: #042f2e;
    --tgs-teal-light: #f0fdfa;
    --tgs-teal-border: #5eead4;
    --tgs-cyan: #06b6d4;
    --tgs-amber: #f59e0b;
    --tgs-amber-light: #fffbeb;
    --tgs-amber-border: #fde68a;
    --tgs-red: #ef4444;
    --tgs-red-light: #fef2f2;
    --tgs-green: #22c55e;
    --tgs-green-light: #f0fdf4;
    --tgs-slate-900: #0f172a;
    --tgs-slate-700: #334155;
    --tgs-slate-500: #64748b;
    --tgs-slate-300: #cbd5e1;
    --tgs-slate-200: #e2e8f0;
    --tgs-slate-100: #f1f5f9;
    --tgs-bg: #f3f8f7;
    --tgs-white: #ffffff;
    --tgs-radius: 14px;
}

/* ─── 래퍼 ─── */
.tg-stl-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    color: var(--tgs-slate-500);
    background-color: var(--tgs-bg);
    box-sizing: border-box;
    line-height: 1.7;
    overflow: hidden;
    padding-bottom: 60px;
}

.tg-stl-wrapper *,
.tg-stl-wrapper *::before,
.tg-stl-wrapper *::after {
    box-sizing: inherit;
    margin: 0;
    padding: 0;
}

.tg-stl-wrapper strong {
    font-weight: 700;
    color: var(--tgs-slate-900);
}

.tg-stl-wrapper mark {
    background: linear-gradient(120deg, var(--tgs-teal-light) 0%, #ccfbf1 100%);
    color: var(--tgs-teal-deep);
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
}

.tg-stl-wrapper code {
    font-family: 'Consolas', 'Courier New', monospace;
    background-color: var(--tgs-slate-100);
    color: var(--tgs-teal-dark);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.9em;
    font-weight: 600;
    border: 1px solid var(--tgs-slate-200);
}

/* ─── 히어로 헤더 ─── */
.tg-stl-hero {
    background: linear-gradient(145deg, #020617 0%, #042f2e 30%, #0d9488 70%, #14b8a6 100%);
    color: var(--tgs-white);
    padding: 60px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tg-stl-hero::before {
    content: "";
    position: absolute;
    width: 340px;
    height: 340px;
    border: 55px solid rgba(13, 148, 136, 0.06);
    border-radius: 50%;
    top: -90px;
    right: -90px;
}

.tg-stl-hero::after {
    content: "";
    position: absolute;
    width: 200px;
    height: 200px;
    border: 35px solid rgba(94, 234, 212, 0.04);
    border-radius: 50%;
    bottom: -50px;
    left: -40px;
}

.tg-stl-hero__inner {
    position: relative;
    z-index: 1;
}

.tg-stl-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--tgs-teal-border);
    font-size: 14px;
    font-weight: 700;
    padding: 8px 20px;
    border-radius: 100px;
    margin-bottom: 22px;
    border: 1px solid rgba(94, 234, 212, 0.15);
    backdrop-filter: blur(4px);
}

.tg-stl-hero__badge i {
    font-size: 16px;
    color: var(--tgs-teal-border);
}

.tg-stl-hero__title {
    font-size: 28px;
    font-weight: 900;
    line-height: 1.35;
    margin-bottom: 18px;
    color: var(--tgs-white);
}

.tg-stl-hero__desc {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.6);
    max-width: 620px;
    margin: 0 auto;
}

/* ─── 메인 ─── */
.tg-stl-main {
    padding: 30px 20px 0;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* ─── 도입부 ─── */
.tg-stl-intro {
    background-color: var(--tgs-white);
    padding: 28px 24px;
    border-radius: var(--tgs-radius);
    border-left: 4px solid var(--tgs-teal);
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
}

.tg-stl-intro p {
    font-size: 16px;
    margin-bottom: 14px;
}

.tg-stl-intro p:last-child {
    margin-bottom: 0;
}

/* ─── 섹션 공통 ─── */
.tg-stl-section {
    background-color: var(--tgs-white);
    padding: 34px 24px;
    border-radius: var(--tgs-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--tgs-slate-200);
}

.tg-stl-section--highlight {
    background: linear-gradient(135deg, var(--tgs-teal-light) 0%, #ccfbf1 100%);
    border-color: var(--tgs-teal-border);
}

.tg-stl-section__head {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 16px;
}

.tg-stl-section__num {
    font-size: 38px;
    font-weight: 900;
    color: var(--tgs-teal);
    opacity: 0.2;
    line-height: 1;
    flex-shrink: 0;
}

.tg-stl-section__title {
    font-size: 20px;
    font-weight: 800;
    color: var(--tgs-slate-900);
    line-height: 1.35;
    padding-top: 6px;
}

.tg-stl-section__desc {
    font-size: 16px;
    margin-bottom: 24px;
}

.tg-stl-section__result {
    font-size: 14px;
    color: var(--tgs-teal-dark);
    font-weight: 600;
    background-color: var(--tgs-teal-light);
    padding: 12px 16px;
    border-radius: 8px;
    margin-top: 16px;
    border-left: 3px solid var(--tgs-teal-border);
}

.tg-stl-section__result i {
    color: var(--tgs-teal);
    margin-right: 6px;
}

/* ─── 스텝 리스트 ─── */
.tg-stl-steps {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 0;
}

.tg-stl-step {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background-color: var(--tgs-slate-100);
    padding: 16px 18px;
    border-radius: 10px;
    border-left: 3px solid var(--tgs-teal-border);
    transition: border-left-color 0.2s ease;
}

.tg-stl-step:hover {
    border-left-color: var(--tgs-teal);
}

.tg-stl-step__marker {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--tgs-teal) 0%, var(--tgs-teal-dark) 100%);
    color: var(--tgs-white);
    font-weight: 800;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-top: 1px;
}

.tg-stl-step__text {
    font-size: 15px;
    padding-top: 3px;
}

.tg-stl-step__text p {
    margin-bottom: 10px;
}

/* ─── 인라인 팁 블록 ─── */
.tg-stl-tip-inline {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background-color: var(--tgs-amber-light);
    border: 1px solid var(--tgs-amber-border);
    padding: 16px 18px;
    border-radius: 10px;
    margin-top: 16px;
}

.tg-stl-tip-inline__icon {
    flex-shrink: 0;
    font-size: 20px;
    color: var(--tgs-amber);
    margin-top: 1px;
}

.tg-stl-tip-inline__label {
    display: block;
    font-size: 13px;
    font-weight: 800;
    color: #92400e;
    margin-bottom: 4px;
}

.tg-stl-tip-inline__text {
    font-size: 14px;
    color: #a16207;
}

/* ─── 토글 설정 카드 ─── */
.tg-stl-toggle-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--tgs-slate-200);
    background-color: var(--tgs-white);
}

.tg-stl-toggle-card--on {
    background: linear-gradient(135deg, var(--tgs-teal-light) 0%, #ccfbf1 100%);
    border-color: var(--tgs-teal-border);
}

.tg-stl-toggle-card--safe {
    background: linear-gradient(135deg, var(--tgs-green-light) 0%, #dcfce7 100%);
    border-color: #86efac;
}

.tg-stl-toggle-card__icon {
    flex-shrink: 0;
    font-size: 18px;
    color: var(--tgs-teal);
}

.tg-stl-toggle-card--safe .tg-stl-toggle-card__icon {
    color: var(--tgs-green);
}

.tg-stl-toggle-card__body {
    font-size: 14px;
    font-weight: 600;
    color: var(--tgs-slate-900);
}

.tg-stl-toggle-card__badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 800;
    color: var(--tgs-white);
    background-color: var(--tgs-teal);
    padding: 2px 8px;
    border-radius: 100px;
    margin-left: 6px;
    vertical-align: middle;
}

.tg-stl-toggle-card__badge--warn {
    background-color: var(--tgs-red);
}

/* ─── PC 설정 블록 ─── */
.tg-stl-pc-setting {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background-color: var(--tgs-slate-100);
    padding: 22px;
    border-radius: 12px;
    border: 1px solid var(--tgs-slate-200);
}

.tg-stl-pc-setting__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--tgs-teal) 0%, var(--tgs-cyan) 100%);
    color: var(--tgs-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.tg-stl-pc-setting__title {
    font-size: 17px;
    font-weight: 800;
    color: var(--tgs-slate-900);
    margin-bottom: 8px;
}

.tg-stl-pc-setting__path {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--tgs-teal-dark);
    background-color: var(--tgs-teal-light);
    padding: 5px 10px;
    border-radius: 6px;
    margin-bottom: 8px;
}

.tg-stl-pc-setting__path i {
    margin-right: 3px;
}

.tg-stl-pc-setting__desc {
    font-size: 14px;
}

/* ─── 사용자명 경로 비주얼 ─── */
.tg-stl-username-guide {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px 16px;
    background-color: var(--tgs-white);
    border-radius: 12px;
    border: 1px solid var(--tgs-teal-border);
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.tg-stl-username-guide__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.tg-stl-username-guide__step span {
    font-size: 11px;
    font-weight: 700;
    color: var(--tgs-slate-500);
}

.tg-stl-username-guide__step--active span {
    color: var(--tgs-teal);
    font-weight: 800;
}

.tg-stl-username-guide__icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-size: 18px;
    background-color: var(--tgs-slate-100);
    color: var(--tgs-slate-500);
}

.tg-stl-username-guide__step--active .tg-stl-username-guide__icon {
    background: linear-gradient(135deg, var(--tgs-teal) 0%, #14b8a6 100%);
    color: var(--tgs-white);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.tg-stl-username-guide__arrow {
    font-size: 14px;
    color: var(--tgs-slate-300);
    margin-bottom: 20px;
}

/* ─── 결론 및 요약 ─── */
.tg-stl-summary {
    background: linear-gradient(135deg, #020617 0%, var(--tgs-teal-deep) 50%, var(--tgs-teal-dark) 100%);
    color: var(--tgs-white);
    padding: 44px 28px;
    border-radius: var(--tgs-radius);
    text-align: center;
    box-shadow: 0 10px 30px rgba(4, 47, 46, 0.3);
}

.tg-stl-summary__title {
    font-size: 24px;
    font-weight: 800;
    color: var(--tgs-white);
    margin-bottom: 20px;
}

.tg-stl-summary__body p {
    font-size: 16px;
    margin-bottom: 14px;
    color: var(--tgs-teal-border);
}

.tg-stl-summary__body p:last-child {
    margin-bottom: 0;
}

.tg-stl-summary strong {
    color: var(--tgs-white);
}

/* 체크리스트 */
.tg-stl-summary__checklist {
    list-style: none;
    display: inline-block;
    text-align: left;
    background-color: rgba(255, 255, 255, 0.06);
    padding: 24px 32px;
    border-radius: 12px;
    margin: 24px 0;
}

.tg-stl-summary__checklist li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
    font-size: 15px;
    color: #ccfbf1;
}

.tg-stl-summary__checklist li:last-child {
    margin-bottom: 0;
}

.tg-stl-summary__checklist li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 13px;
    color: var(--tgs-teal-border);
}

.tg-stl-summary__checklist strong {
    color: var(--tgs-white);
}

.tg-stl-summary__footer {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 14px;
    color: var(--tgs-teal-border);
    line-height: 1.8;
}

.tg-stl-summary__footer strong {
    color: var(--tgs-white);
}

/* ============================================
   반응형 미디어 쿼리 (모바일 퍼스트)
============================================ */
@media (min-width: 768px) {
    .tg-stl-hero {
        padding: 80px 40px;
    }

    .tg-stl-hero__title {
        font-size: 38px;
    }

    .tg-stl-main {
        padding: 40px 36px 0;
        gap: 40px;
    }

    .tg-stl-intro {
        padding: 36px 32px;
    }

    .tg-stl-section {
        padding: 40px 36px;
    }

    .tg-stl-section__title {
        font-size: 24px;
    }

    .tg-stl-section__num {
        font-size: 44px;
    }

    .tg-stl-summary {
        padding: 56px 44px;
    }
}

@media (min-width: 1024px) {
    .tg-stl-hero__title {
        font-size: 44px;
    }

    .tg-stl-main {
        gap: 46px;
    }
}

/* ============================================
   스크롤 등장 애니메이션 (JS 연동)
============================================ */
.tg-stl-motion {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.tg-stl-motion.is-visible {
    opacity: 1;
    transform: translateY(0);
}