:root {
    --reward-bg: #050816;
    --reward-bg-soft: #0a1224;
    --reward-surface: rgba(9, 18, 36, 0.82);
    --reward-surface-strong: rgba(8, 16, 32, 0.96);
    --reward-line: rgba(110, 201, 255, 0.18);
    --reward-line-strong: rgba(83, 220, 255, 0.34);
    --reward-text: #eef5ff;
    --reward-muted: #a8b8d6;
    --reward-dim: #7486a7;
    --reward-cyan: #53dcff;
    --reward-mint: #38f1c2;
    --reward-violet: #8b72ff;
    --reward-gold: #ffd166;
    --reward-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
    --reward-radius: 28px;
    --reward-font: 'Noto Sans TC', 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--reward-text);
    background:
        radial-gradient(circle at 12% 5%, rgba(83, 220, 255, 0.16), transparent 30%),
        radial-gradient(circle at 88% 12%, rgba(139, 114, 255, 0.18), transparent 30%),
        radial-gradient(circle at 50% 100%, rgba(56, 241, 194, 0.10), transparent 34%),
        linear-gradient(180deg, #07101f 0%, #050816 55%, #03050d 100%);
    font-family: var(--reward-font);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(110, 201, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(110, 201, 255, 0.035) 1px, transparent 1px);
    background-size: 120px 120px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 82%);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 82%);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }

.reward-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 0 24px;
    background: rgba(5, 10, 20, 0.86);
    border-bottom: 1px solid rgba(110, 201, 255, 0.14);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.reward-nav__inner {
    width: min(1180px, 100%);
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.reward-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 0.03em;
}

.reward-brand img {
    width: auto;
    height: 46px;
    object-fit: contain;
    filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.35));
}

.reward-nav__actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.reward-nav__link {
    padding: 10px 14px;
    color: var(--reward-muted);
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    transition: 0.2s ease;
}

.reward-nav__link:hover {
    color: var(--reward-text);
    background: rgba(83, 220, 255, 0.10);
}

.reward-nav__link.is-active {
    color: #2b1600;
    background: linear-gradient(135deg, #ffe66d 0%, #ffad3d 100%);
    border-color: rgba(255, 235, 145, 0.72);
    box-shadow: 0 10px 24px rgba(255, 177, 61, 0.28);
}

.reward-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-family: var(--reward-font);
    font-size: 14px;
    font-weight: 900;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.reward-btn:hover { transform: translateY(-2px); }
.reward-btn--primary {
    color: #03111d;
    background: linear-gradient(135deg, var(--reward-cyan), var(--reward-mint));
    box-shadow: 0 14px 34px rgba(83, 220, 255, 0.24);
}

.reward-btn--primary:hover { box-shadow: 0 18px 42px rgba(83, 220, 255, 0.32); }
.reward-btn--ghost {
    color: var(--reward-text);
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(110, 201, 255, 0.22);
}

.reward-btn--ghost:hover {
    background: rgba(83, 220, 255, 0.10);
    border-color: rgba(83, 220, 255, 0.38);
}

.reward-btn--lg {
    min-height: 52px;
    padding: 13px 24px;
    font-size: 15px;
}

.reward-hero {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 76px 0 64px;
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 54px;
}

.reward-eyebrow,
.reward-kicker {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--reward-cyan);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.reward-eyebrow {
    padding: 9px 14px;
    border: 1px solid rgba(83, 220, 255, 0.22);
    border-radius: 999px;
    background: rgba(83, 220, 255, 0.06);
    letter-spacing: 0.04em;
}

.reward-eyebrow__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--reward-mint);
    box-shadow: 0 0 16px rgba(56, 241, 194, 0.9);
}

.reward-hero h1 {
    margin: 22px 0 22px;
    font-size: clamp(2.55rem, 5vw, 4.7rem);
    line-height: 1.12;
    letter-spacing: -0.045em;
}

.reward-hero h1 span {
    color: transparent;
    background: linear-gradient(100deg, #ffffff 0%, var(--reward-cyan) 46%, var(--reward-mint) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.reward-hero__lead {
    color: #dce9ff;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.75;
}

.reward-hero__copy > p:not(.reward-hero__lead):not(.reward-note) {
    color: var(--reward-muted);
    font-size: 16px;
    line-height: 1.9;
}

.reward-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.reward-note {
    margin: 16px 0 0;
    color: var(--reward-dim);
    font-size: 12px;
    line-height: 1.7;
}

.reward-hero__media {
    position: relative;
    margin: 0;
    border: 1px solid rgba(110, 201, 255, 0.2);
    border-radius: 30px;
    overflow: hidden;
    background: var(--reward-surface);
    box-shadow: var(--reward-shadow), 0 0 70px rgba(83, 220, 255, 0.10);
}

.reward-hero__media::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), inset 0 -80px 80px rgba(0, 0, 0, 0.18);
}

.reward-hero__media img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.reward-tips,
.latest-articles,
.reward-cta {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.reward-tips { padding: 34px 0 76px; }
.latest-articles { padding: 10px 0 76px; }

.reward-section-head {
    max-width: 760px;
    margin-bottom: 30px;
}

.reward-section-head h2,
.reward-cta h2 {
    margin: 10px 0 12px;
    font-size: clamp(1.85rem, 3.4vw, 3rem);
    line-height: 1.2;
    letter-spacing: -0.035em;
}

.reward-section-head p,
.reward-cta p {
    margin-bottom: 0;
    color: var(--reward-muted);
    font-size: 16px;
    line-height: 1.9;
}

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

.reward-tip-card {
    position: relative;
    min-height: 260px;
    padding: 28px;
    overflow: hidden;
    border: 1px solid var(--reward-line);
    border-radius: var(--reward-radius);
    background: linear-gradient(150deg, rgba(15, 28, 52, 0.92), rgba(6, 13, 27, 0.9));
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
}

.reward-tip-card::after {
    content: '';
    position: absolute;
    right: -45px;
    bottom: -55px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(83, 220, 255, 0.18), transparent 68%);
}

.reward-tip-card__number {
    color: rgba(83, 220, 255, 0.48);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.18em;
}

.reward-tip-card__icon {
    width: 58px;
    height: 58px;
    margin: 30px 0 20px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(83, 220, 255, 0.18);
    border-radius: 18px;
    background: rgba(83, 220, 255, 0.08);
    font-size: 27px;
}

.reward-tip-card h3 {
    margin-bottom: 10px;
    font-size: 21px;
}

.reward-tip-card p {
    margin-bottom: 0;
    color: var(--reward-muted);
    font-size: 15px;
    line-height: 1.8;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.article-card,
.article-loading,
.article-empty {
    border: 1px solid var(--reward-line);
    border-radius: 22px;
    background: var(--reward-surface);
    box-shadow: 0 16px 46px rgba(0, 0, 0, 0.22);
}

.article-card {
    display: flex;
    min-height: 174px;
    padding: 24px;
    flex-direction: column;
    justify-content: space-between;
    gap: 22px;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.article-card:hover {
    transform: translateY(-3px);
    border-color: var(--reward-line-strong);
    background: rgba(13, 28, 53, 0.94);
}

.article-card__top,
.article-card__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.merchant-id {
    display: inline-flex;
    align-items: center;
    min-width: 0;
    max-width: 64%;
    padding: 6px 10px;
    overflow: hidden;
    color: var(--reward-cyan);
    background: rgba(83, 220, 255, 0.08);
    border: 1px solid rgba(83, 220, 255, 0.16);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 900;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-date {
    flex: 0 0 auto;
    color: var(--reward-dim);
    font-size: 12px;
}

.article-card h3 {
    margin: 0;
    font-size: 21px;
    line-height: 1.45;
    letter-spacing: -0.01em;
    overflow-wrap: anywhere;
}

.article-card__foot {
    color: var(--reward-muted);
    font-size: 13px;
}

.article-card__merchant {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-card__more {
    flex: 0 0 auto;
    color: var(--reward-mint);
    font-weight: 900;
}

.article-loading,
.article-empty {
    grid-column: 1 / -1;
    padding: 34px;
    color: var(--reward-muted);
    text-align: center;
}

.article-empty strong {
    display: block;
    margin-bottom: 8px;
    color: var(--reward-text);
    font-size: 20px;
}

.article-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-top: 24px;
}

.article-pagination[hidden] { display: none; }

.article-page-btn {
    min-width: 104px;
    min-height: 44px;
    padding: 10px 18px;
    color: var(--reward-text);
    background: linear-gradient(135deg, rgba(83, 220, 255, 0.14), rgba(139, 114, 255, 0.14));
    border: 1px solid rgba(83, 220, 255, 0.28);
    border-radius: 999px;
    font-family: var(--reward-font);
    font-size: 14px;
    font-weight: 900;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, opacity 0.2s ease;
}

.article-page-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    border-color: rgba(83, 220, 255, 0.52);
    background: linear-gradient(135deg, rgba(83, 220, 255, 0.24), rgba(139, 114, 255, 0.22));
}

.article-page-btn:disabled {
    cursor: not-allowed;
    opacity: 0.42;
}

.article-page-status {
    min-width: 92px;
    color: var(--reward-muted);
    text-align: center;
    font-size: 14px;
    font-weight: 700;
}

.reward-cta {
    margin-bottom: 76px;
    padding: 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    border: 1px solid rgba(83, 220, 255, 0.22);
    border-radius: 30px;
    background:
        radial-gradient(circle at 86% 12%, rgba(56, 241, 194, 0.16), transparent 30%),
        linear-gradient(135deg, rgba(14, 31, 58, 0.98), rgba(7, 14, 29, 0.98));
    box-shadow: var(--reward-shadow);
}

.reward-cta h2 { margin-bottom: 8px; }

.reward-footer {
    padding: 30px 20px 40px;
    color: var(--reward-dim);
    border-top: 1px solid rgba(110, 201, 255, 0.12);
    text-align: center;
    font-size: 13px;
}

.reward-footer a { color: var(--reward-muted); }
.reward-footer a:hover { color: var(--reward-cyan); }
.reward-footer span { margin: 0 10px; color: rgba(168, 184, 214, 0.35); }
.reward-footer p { margin: 12px 0 0; }

@media (max-width: 920px) {
    .reward-hero {
        grid-template-columns: 1fr;
        gap: 34px;
        padding-top: 58px;
    }

    .reward-hero__copy { max-width: 760px; }
    .reward-hero__media { order: 2; }
    .reward-tip-grid { grid-template-columns: 1fr; }
    .reward-tip-card { min-height: auto; }
    .reward-cta {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .reward-nav { padding: 10px 12px; }
    .reward-nav__inner {
        min-height: 58px;
        padding: 7px 8px 7px 11px;
        border: 1px solid rgba(83, 220, 255, 0.15);
        border-radius: 999px;
        background: rgba(6, 13, 27, 0.78);
        gap: 8px;
    }

    .reward-brand { gap: 8px; font-size: 15px; }
    .reward-brand img { height: 34px; }
    .reward-nav__actions { gap: 6px; }
    .reward-nav__link { display: none; }
    .reward-nav .reward-btn--primary {
        min-height: 38px;
        padding: 8px 12px;
        font-size: 12px;
    }

    .reward-hero,
    .reward-tips,
    .latest-articles,
    .reward-cta {
        width: min(100% - 28px, 1180px);
    }

    .reward-hero { padding: 46px 0 42px; }
    .reward-hero h1 {
        margin: 18px 0 18px;
        font-size: clamp(2.25rem, 11vw, 3.35rem);
        letter-spacing: -0.035em;
    }

    .reward-hero__lead { font-size: 16px; }
    .reward-hero__copy > p:not(.reward-hero__lead):not(.reward-note) { font-size: 15px; }
    .reward-hero__actions { display: grid; grid-template-columns: 1fr; }
    .reward-btn--lg { width: 100%; }
    .reward-hero__media { border-radius: 22px; }
    .reward-tips { padding-bottom: 52px; }
    .latest-articles { padding-bottom: 52px; }
    .reward-section-head { margin-bottom: 22px; }
    .reward-section-head h2,
    .reward-cta h2 { font-size: 1.85rem; }
    .reward-section-head p,
    .reward-cta p { font-size: 15px; }
    .reward-tip-card,
    .article-card { padding: 20px; }
    .article-grid { grid-template-columns: 1fr; }
    .article-card { min-height: 158px; }
    .article-card h3 { font-size: 19px; }
    .article-pagination {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        gap: 8px;
    }
    .article-page-btn {
        min-width: 0;
        padding: 10px 12px;
        font-size: 13px;
    }
    .article-page-status { min-width: 74px; font-size: 13px; }
    .reward-cta {
        margin-bottom: 52px;
        padding: 26px 20px;
        border-radius: 24px;
    }
    .reward-cta .reward-btn { width: 100%; }
}

@media (max-width: 390px) {
    .reward-brand span { display: none; }
    .reward-hero h1 { font-size: 2.15rem; }
    .reward-hero__media { border-radius: 18px; }
    .merchant-id { max-width: 68%; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}