.phon-hero {
    background: linear-gradient(135deg, #0B2545 0%, #134E6F 100%);
    color: #fff;
    padding: 2rem 1rem 1.75rem;
    text-align: center;
}
.phon-hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 1.6rem;
    line-height: 1.15;
    margin: 0 0 .5rem;
}
.phon-hero p {
    opacity: .85;
    margin: 0 auto;
    max-width: 640px;
    font-size: .9rem;
    line-height: 1.5;
}
@media (min-width: 640px) {
    .phon-hero { padding: 4rem 1rem 3rem; }
    .phon-hero h1 { font-size: 2.6rem; }
    .phon-hero p { font-size: 1rem; }
}

.phon-section { padding: 1.25rem 0 .5rem; }
.phon-section:nth-of-type(even) { background: #f8fafc; }
@media (min-width: 640px) { .phon-section { padding: 2.5rem 0 1rem; } }

.phon-heading {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    color: #0B2545;
    margin: 0 0 .75rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}
@media (min-width: 640px) {
    .phon-heading { font-size: 1.7rem; margin: 0 0 1rem; }
}

.phon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: .5rem;
}
@media (min-width: 640px) {
    .phon-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: .6rem;
    }
}

.phon-card {
    background: #fff;
    border-radius: 10px;
    padding: .55rem .7rem;
    display: flex;
    align-items: center;
    gap: .65rem;
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
    transition: transform .15s, box-shadow .15s;
    cursor: pointer;
    min-height: 52px;
    -webkit-tap-highlight-color: rgba(46,196,182,.2);
}
.phon-card:active { transform: scale(.98); }
@media (hover: hover) {
    .phon-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 18px rgba(11,37,69,.12);
    }
}
.phon-letter {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    background: #0B2545;
    color: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    font-family: 'Playfair Display', serif;
}
@media (min-width: 640px) {
    .phon-letter { width: 40px; height: 40px; font-size: 1.15rem; }
}
.phon-body {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    min-width: 0;
}
.phon-word {
    font-weight: 700;
    color: #0B2545;
    font-size: .95rem;
}
.phon-pron {
    font-size: .72rem;
    color: #64748b;
    font-family: 'Work Sans', sans-serif;
    letter-spacing: .02em;
    margin-top: 2px;
}
@media (min-width: 640px) {
    .phon-word { font-size: 1rem; }
    .phon-pron { font-size: .75rem; }
}

.tip-box {
    background: linear-gradient(135deg, #e6f3ff, #d1eaff);
    border-left: 4px solid #2EC4B6;
    border-radius: 8px;
    padding: .9rem 1rem;
    margin: 1rem 0;
}
.tip-box h3 {
    margin: 0 0 6px;
    color: #0B2545;
    font-size: .95rem;
    display: flex;
    align-items: center;
    gap: .4rem;
}
.tip-box p {
    margin: 0;
    color: #334;
    line-height: 1.55;
    font-size: .85rem;
}
@media (min-width: 640px) {
    .tip-box { padding: 1rem 1.25rem; margin: 1.5rem 0; }
    .tip-box h3 { font-size: 1rem; }
    .tip-box p { font-size: .9rem; }
}

.copy-hint {
    font-size: .75rem;
    color: #64748b;
    margin: .25rem 0 .75rem;
    text-align: center;
}
.copy-hint i { margin-right: .3rem; }
@media (min-width: 640px) {
    .copy-hint { text-align: right; font-size: .78rem; margin: .25rem 0 1rem; }
}

.copied-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #0B2545;
    color: #fff;
    padding: .55rem 1.1rem;
    border-radius: 999px;
    font-size: .85rem;
    font-weight: 600;
    opacity: 0;
    transition: opacity .2s, transform .2s;
    pointer-events: none;
    z-index: 1000;
    box-shadow: 0 6px 18px rgba(0,0,0,.2);
}
.copied-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}