:root {
            --ink: #0b1220;
            --muted: #5f6b7a;
            --line: #d8dee8;
            --paper: #f4f7fb;
            --white: #ffffff;
            --navy: #07111f;
            --navy-2: #0f1b2e;
            --blue: #2563eb;
            --cyan: #06b6d4;
            --lime: #84cc16;
            --amber: #f59e0b;
            --shadow: 0 28px 70px rgba(7, 17, 31, .18);
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
            color: var(--ink);
            background: var(--paper);
            line-height: 1.55;
            letter-spacing: 0;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; }
        .wrap { width: min(1180px, calc(100% - 44px)); margin: 0 auto; }

        .nav {
            position: sticky;
            top: 0;
            z-index: 20;
            border-bottom: 1px solid rgba(255,255,255,.1);
            background: rgba(7, 17, 31, .9);
            color: #fff;
            backdrop-filter: blur(18px);
        }
        .nav-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 950; }
        .brand img { width: 38px; height: 38px; object-fit: contain; filter: drop-shadow(0 8px 18px rgba(37,99,235,.34)); }
        .nav-links { display: flex; align-items: center; gap: 22px; color: rgba(255,255,255,.68); font-size: 14px; font-weight: 800; }
        .nav-links a:hover { color: #fff; }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 20px;
            border-radius: 8px;
            font-weight: 950;
            border: 1px solid transparent;
            cursor: pointer;
            white-space: nowrap;
            transition: transform .18s ease, background .18s ease, border-color .18s ease;
        }
        .button:hover { transform: translateY(-1px); }
        .button.primary { color: #fff; background: var(--blue); box-shadow: 0 16px 34px rgba(37, 99, 235, .32); }
        .button.secondary { color: #dbeafe; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); }
        .section .button.secondary, .download-card .button.secondary { color: var(--blue); background: #eef4ff; border-color: #cfe0ff; }

        .hero {
            min-height: calc(100vh - 72px);
            display: grid;
            align-items: center;
            padding: 64px 0;
            color: #fff;
            background:
                linear-gradient(120deg, rgba(7,17,31,.96) 0%, rgba(7,17,31,.86) 46%, rgba(7,17,31,.38) 100%),
                url("https://images.pexels.com/photos/5428725/pexels-photo-5428725.jpeg?auto=compress&cs=tinysrgb&w=1800") center / cover no-repeat;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 430px;
            gap: 56px;
            align-items: center;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            color: #93c5fd;
            font-weight: 950;
            font-size: 13px;
            text-transform: uppercase;
        }
        .eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--cyan); }
        h1 {
            margin: 0;
            max-width: 780px;
            font-size: clamp(42px, 6vw, 78px);
            line-height: 1.04;
            letter-spacing: 0;
        }
        .lead {
            margin: 24px 0 0;
            max-width: 680px;
            color: rgba(255,255,255,.76);
            font-size: 19px;
            font-weight: 650;
        }
        .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 34px; }
        .trust-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
        .pill {
            padding: 9px 12px;
            border: 1px solid rgba(255,255,255,.18);
            border-radius: 999px;
            background: rgba(255,255,255,.08);
            color: rgba(255,255,255,.78);
            font-size: 13px;
            font-weight: 850;
        }
        .hero-visual {
            position: relative;
            min-height: 520px;
            overflow: hidden;
            border: 1px solid rgba(255,255,255,.16);
            border-radius: 10px;
            background: rgba(255,255,255,.08);
            box-shadow: var(--shadow);
            backdrop-filter: blur(18px);
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            min-height: 520px;
            display: block;
            object-fit: cover;
            opacity: .86;
        }
        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7,17,31,.05), rgba(7,17,31,.86));
        }
        .hero-panel {
            position: absolute;
            left: 22px;
            right: 22px;
            bottom: 22px;
            z-index: 1;
            padding: 22px;
            border: 1px solid rgba(255,255,255,.16);
            border-radius: 8px;
            background: rgba(7, 17, 31, .82);
        }
        .hero-panel strong { display: block; font-size: 20px; line-height: 1.28; }
        .hero-panel span { display: block; margin-top: 8px; color: rgba(255,255,255,.72); font-size: 14px; font-weight: 750; }

        .section { padding: 92px 0; background: var(--paper); }
        .section.tight { padding-top: 78px; }
        .section.white { background: #fff; }
        .section-head { max-width: 790px; margin-bottom: 34px; }
        .section h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.14; letter-spacing: 0; }
        .section-desc { margin: 16px 0 0; color: var(--muted); font-size: 17px; font-weight: 650; }

        .planner {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .plan-card {
            position: relative;
            overflow: hidden;
            min-height: 420px;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            box-shadow: 0 18px 42px rgba(7, 17, 31, .08);
        }
        .plan-photo { width: 100%; height: 210px; object-fit: cover; display: block; filter: saturate(1.05) contrast(1.02); }
        .plan-card::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            border-top: 4px solid var(--blue);
        }
        .plan-card.green::after { border-top-color: var(--cyan); }
        .plan-card.amber::after { border-top-color: var(--amber); }
        .plan-card > :not(.plan-photo) { margin-left: 24px; margin-right: 24px; }
        .plan-role {
            display: inline-flex;
            height: 30px;
            align-items: center;
            margin-top: 24px;
            padding: 0 10px;
            border-radius: 6px;
            color: #fff;
            background: var(--blue);
            font-size: 12px;
            font-weight: 950;
        }
        .plan-card.green .plan-role { background: var(--cyan); color: #062230; }
        .plan-card.amber .plan-role { background: var(--amber); color: #251600; }
        .plan-card h3 { margin-top: 18px; margin-bottom: 0; font-size: 25px; line-height: 1.2; }
        .plan-platforms { margin-top: 8px; color: var(--ink); font-size: 15px; font-weight: 950; }
        .plan-card p { margin-top: 14px; color: var(--muted); font-size: 15px; font-weight: 650; }

        .download-shell {
            display: grid;
            grid-template-columns: 360px 1fr;
            gap: 26px;
            align-items: start;
        }
        .download-photo {
            position: sticky;
            top: 96px;
            overflow: hidden;
            border-radius: 10px;
            background: var(--navy);
            box-shadow: var(--shadow);
        }
        .download-photo img { width: 100%; height: 620px; object-fit: cover; display: block; opacity: .9; }
        .download-photo-copy {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            padding: 28px;
            color: #fff;
            background: linear-gradient(180deg, rgba(7,17,31,0), rgba(7,17,31,.92));
        }
        .download-photo-copy strong { display: block; font-size: 26px; line-height: 1.2; }
        .download-photo-copy span { display: block; margin-top: 10px; color: rgba(255,255,255,.74); font-size: 14px; font-weight: 750; }
        .download-grid { display: grid; gap: 18px; }
        .download-group {
            display: grid;
            grid-template-columns: 285px 1fr;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            box-shadow: 0 16px 40px rgba(7, 17, 31, .07);
        }
        .download-group-title {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 218px;
            padding: 24px;
            color: #fff;
            background: var(--navy);
        }
        .download-group:nth-child(2) .download-group-title { background: #0b2f42; }
        .download-group:nth-child(3) .download-group-title { background: #3b2808; }
        .download-kicker { color: rgba(255,255,255,.68); font-size: 13px; font-weight: 900; }
        .download-group-title strong { display: block; margin-top: 10px; font-size: 26px; line-height: 1.15; }
        .download-group-title p { margin: 14px 0 0; color: rgba(255,255,255,.72); font-size: 14px; font-weight: 650; }
        .download-count { color: rgba(255,255,255,.62); font-size: 13px; font-weight: 850; }
        .download-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
        .download-card {
            display: grid;
            grid-template-columns: 54px 1fr;
            gap: 14px;
            align-items: start;
            min-height: 218px;
            padding: 24px;
            border-left: 1px solid var(--line);
            background: #fff;
        }
        .download-card .button { grid-column: 1 / -1; align-self: end; min-height: 44px; width: 100%; }
        .download-icon {
            width: 54px;
            height: 54px;
            display: grid;
            place-items: center;
            border-radius: 8px;
            color: #fff;
            background: var(--blue);
            font-size: 13px;
            font-weight: 950;
        }
        .download-group:nth-child(2) .download-icon { background: var(--cyan); color: #062230; }
        .download-group:nth-child(3) .download-icon { background: var(--amber); color: #251600; }
        .download-copy h3 { margin: 2px 0 0; font-size: 20px; line-height: 1.25; }
        .download-copy p { margin: 10px 0 0; color: var(--muted); font-size: 14px; font-weight: 650; }
        .download-meta { color: var(--blue) !important; font-size: 13px !important; font-weight: 900 !important; }
        .download-note { margin-top: 16px; color: var(--muted); font-size: 13px; font-weight: 800; }

        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
        .card, .mode-card, .use-item {
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            box-shadow: 0 12px 32px rgba(7, 17, 31, .05);
        }
        .card { padding: 22px; min-height: 186px; }
        .card.alt { background: #f8fbff; }
        .icon, .step-num {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            margin-bottom: 18px;
            border-radius: 8px;
            color: #fff;
            background: var(--blue);
            font-weight: 950;
        }
        .step-num { background: var(--navy); }
        .card h3 { margin: 0; font-size: 19px; line-height: 1.32; }
        .card p { margin: 10px 0 0; color: var(--muted); font-size: 15px; font-weight: 600; }
        .mode-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
        .mode-card { padding: 24px; border-top: 4px solid var(--blue); }
        .mode-card:nth-child(2) { border-top-color: var(--cyan); }
        .mode-card:nth-child(3) { border-top-color: var(--amber); }
        .mode-card strong { display: block; margin-bottom: 8px; font-size: 17px; font-weight: 950; }
        .mode-card span { display: block; color: var(--muted); font-size: 14px; font-weight: 650; }

        .privacy {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
            padding: 34px;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            box-shadow: 0 18px 42px rgba(7,17,31,.07);
        }
        .privacy-list { display: grid; gap: 12px; }
        .check { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); font-weight: 750; }
        .check b { color: var(--blue); }
        .use-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .use-item { padding: 18px; font-weight: 850; }
        .cta {
            padding: 78px 0;
            color: #fff;
            background:
                linear-gradient(90deg, rgba(7,17,31,.94), rgba(7,17,31,.72)),
                url("https://images.pexels.com/photos/7653769/pexels-photo-7653769.jpeg?auto=compress&cs=tinysrgb&w=1600") center / cover no-repeat;
        }
        .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
        .cta h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.15; }
        .cta p { color: rgba(255,255,255,.72); margin: 14px 0 0; font-weight: 650; }
        footer { padding: 32px 0; background: var(--navy); color: rgba(255,255,255,.62); font-size: 13px; font-weight: 750; }
        .footer-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }

        @media (max-width: 980px) {
            .nav-links { display: none; }
            .hero-grid, .download-shell, .privacy { grid-template-columns: 1fr; }
            .hero-visual, .hero-visual img { min-height: 430px; }
            .planner, .grid-4, .grid-3, .mode-strip, .use-list { grid-template-columns: 1fr; }
            .download-photo { position: relative; top: auto; }
            .download-photo img { height: 360px; }
            .download-group { grid-template-columns: 1fr; }
            .download-group-title { min-height: auto; gap: 22px; }
            .download-options { grid-template-columns: 1fr; }
            .download-card { border-left: 0; border-top: 1px solid var(--line); }
            .cta-inner { align-items: flex-start; flex-direction: column; }
        }
        @media (max-width: 560px) {
            .wrap { width: min(100% - 28px, 1180px); }
            .hero { padding: 42px 0; }
            h1 { font-size: 39px; }
            .lead { font-size: 17px; }
            .button { width: 100%; }
            .hero-actions { width: 100%; }
            .section { padding: 64px 0; }
            .plan-card { min-height: auto; }
            .download-card { grid-template-columns: 48px 1fr; }
            .privacy { padding: 22px; }
        }