/* ==========================================================================
   contact.html — 聯繫我們
   版式：朱印承諾卡 + 細線聯絡格 + 合作角色列 + 手風琴 + 雙欄留言
   ========================================================================== */

/* ---------- 01 頁首 ---------- */
.ct-hero {
    padding: clamp(44px, 5.5vw, 76px) 0 clamp(52px, 6vw, 84px);
    background:
        radial-gradient(ellipse 50% 60% at 90% 12%, rgba(216, 227, 214, 0.85), transparent 72%),
        var(--paper);
}
.ct-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.36fr) minmax(0, 0.64fr);
    gap: 56px 60px;
    align-items: start;
}
.ct-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 16px;
    margin-bottom: 26px;
}
.ct-tags li {
    position: relative;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.04em;
}
.ct-tags li + li { padding-left: 16px; }
.ct-tags li + li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 1px;
    height: 12px;
    background: var(--line);
    transform: translateY(-50%);
}
.ct-tags li:first-child { color: var(--seal); }
.ct-hero h1 {
    font-size: clamp(37px, 5vw, 62px);
    line-height: 1.14;
}
.ct-hero h1 span { display: block; }
.ct-lead {
    margin: 26px 0 26px;
    max-width: 50ch;
    font-family: var(--serif);
    font-size: clamp(16.5px, 1.6vw, 19px);
    line-height: 1.9;
    color: var(--ink-2);
}
.ct-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.ct-promise {
    padding: 30px 28px 26px;
    background: var(--seal-wash);
    border: 1px solid rgba(180, 69, 46, 0.22);
    border-radius: var(--radius);
    box-shadow: 16px 16px 0 -2px var(--jade-wash);
}
.ct-promise-top {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(28, 39, 35, 0.16);
}
.ct-promise-number {
    font-family: var(--serif);
    font-size: clamp(54px, 6.4vw, 76px);
    font-weight: 500;
    line-height: 1;
    color: var(--seal);
    letter-spacing: -0.01em;
}
.ct-promise-unit {
    font-size: 14px;
    color: var(--ink-2);
    line-height: 1.5;
}
.ct-promise-list > div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 0;
    border-bottom: 1px solid rgba(28, 39, 35, 0.12);
}
.ct-promise-list dt { font-size: 12.5px; color: var(--ink-2); opacity: 0.8; }
.ct-promise-list dd { font-size: 14px; font-weight: 500; color: var(--ink); }
.ct-promise-note {
    margin-top: 16px;
    font-size: 12.5px;
    line-height: 1.75;
    color: var(--ink-2);
    opacity: 0.8;
}

/* ---------- 02 聯繫方式 ---------- */
.ct-channels {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}
.ct-channels > li {
    padding: 28px 30px 30px;
    background: var(--paper-raised);
}
.ct-channel-label {
    display: block;
    margin-bottom: 8px;
    font-size: 12.5px;
    letter-spacing: 0.08em;
    color: var(--muted);
}
.ct-channel-value {
    display: block;
    margin-bottom: 10px;
    font-family: var(--serif);
    font-size: clamp(20px, 2.3vw, 25px);
    line-height: 1.4;
    color: var(--ink);
    overflow-wrap: anywhere;
    transition: color var(--t-fast);
}
a.ct-channel-value:hover { color: var(--seal); }
.ct-channels p {
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--muted);
    max-width: 40ch;
}

/* ---------- 03 商務合作 ---------- */
.ct-partners { border-top: 2px solid var(--ink); }
.ct-partner {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.3fr) minmax(0, 0.92fr);
    gap: 24px 44px;
    align-items: start;
    padding: 30px 0 32px;
    border-bottom: 1px solid var(--line);
}
.ct-partner-head {
    display: flex;
    align-items: baseline;
    gap: 14px;
}
.ct-partner-head h3 { font-size: clamp(22px, 2.4vw, 27px); }
.ct-partner-mark {
    order: -1;
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--seal);
    border-radius: 2px;
    font-family: var(--serif);
    font-size: 12px;
    color: var(--seal);
}
.ct-partner p {
    font-size: 14.5px;
    line-height: 1.9;
    color: var(--ink-2);
    max-width: 52ch;
}
.ct-partner-points {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 14px;
}
.ct-partner-points li {
    position: relative;
    padding-left: 16px;
    font-size: 13.5px;
    line-height: 1.7;
    color: var(--muted);
}
.ct-partner-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 7px;
    height: 7px;
    background: var(--seal);
    opacity: 0.85;
}

/* ---------- 04 常見問題 ---------- */
.ct-faq { border-top: 1px solid var(--ink); }
.ct-faq details { border-bottom: 1px solid var(--line); }
.ct-faq summary {
    display: flex;
    align-items: baseline;
    gap: 22px;
    padding: 20px 44px 20px 0;
    cursor: pointer;
    list-style: none;
    position: relative;
    font-family: var(--serif);
    font-size: clamp(17px, 1.9vw, 21px);
    color: var(--ink);
    line-height: 1.55;
    transition: color var(--t-fast);
}
.ct-faq summary::-webkit-details-marker { display: none; }
.ct-faq summary:hover { color: var(--seal); }
.ct-faq summary::after {
    content: "+";
    position: absolute;
    right: 4px;
    top: 18px;
    font-family: var(--sans);
    font-size: 20px;
    font-weight: 300;
    color: var(--seal);
    line-height: 1;
}
.ct-faq details[open] summary::after { content: "\2212"; }
.ct-faq-no {
    flex: 0 0 34px;
    font-family: var(--serif);
    font-size: 13px;
    color: var(--seal);
    letter-spacing: 0.06em;
    padding-top: 2px;
}
.ct-faq details p {
    margin: 0 0 22px 56px;
    max-width: 72ch;
    font-size: 14.5px;
    line-height: 1.95;
    color: var(--ink-2);
}

/* ---------- 05 表單 ---------- */
.ct-form-shell {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 40px 64px;
    align-items: start;
}
.ct-form-intro h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    line-height: 1.2;
    max-width: 16ch;
}
.ct-form-intro > p {
    margin: 18px 0 22px;
    font-size: 14.5px;
    line-height: 1.9;
    color: var(--muted);
    max-width: 42ch;
}
.ct-form-promises { display: flex; flex-direction: column; gap: 9px; }
.ct-form-promises li {
    position: relative;
    padding-left: 18px;
    font-size: 13.5px;
    color: var(--ink-2);
}
.ct-form-promises li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 8px;
    height: 8px;
    border: 1px solid var(--seal);
    border-radius: 1px;
}

.ct-form {
    padding: 30px 32px 32px;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-top: 3px solid var(--seal);
    border-radius: var(--radius);
}
.ct-fields-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}
.ct-field { margin-bottom: 18px; }
.ct-field label {
    display: block;
    margin-bottom: 7px;
    font-size: 12.5px;
    color: var(--muted);
    letter-spacing: 0.03em;
}
.ct-field input,
.ct-field select,
.ct-field textarea {
    width: 100%;
    padding: 11px 13px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 2px;
    font-family: var(--sans);
    font-size: 14.5px;
    color: var(--ink);
    transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.ct-field textarea {
    min-height: 148px;
    line-height: 1.8;
    resize: vertical;
}
.ct-field input::placeholder,
.ct-field textarea::placeholder { color: var(--muted-soft); }
.ct-field input:focus,
.ct-field select:focus,
.ct-field textarea:focus {
    outline: none;
    background: var(--paper-raised);
    border-color: var(--seal);
    box-shadow: 0 0 0 3px rgba(180, 69, 46, 0.12);
}
.ct-form-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding-top: 6px;
}
.ct-form-foot span { font-size: 12.5px; color: var(--muted); }

/* ---------- 響應式 ---------- */
@media (max-width: 1024px) {
    .ct-hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .ct-promise { box-shadow: 9px 9px 0 -2px var(--jade-wash); }
    .ct-partner {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
        gap: 16px 32px;
    }
    .ct-partner-head { grid-column: 1 / -1; }
    .ct-partner-points { margin-bottom: 0; }
    .ct-form-shell { grid-template-columns: 1fr; gap: 30px; }
    .ct-form-intro h2 { max-width: none; }
    .ct-form-intro > p { max-width: 60ch; }
    .ct-form-promises { flex-direction: row; flex-wrap: wrap; gap: 10px 26px; }
}

@media (max-width: 768px) {
    .ct-hero { padding-top: 36px; }
    .ct-hero h1 { font-size: clamp(32px, 9vw, 44px); }
    .ct-promise { padding: 24px 22px 22px; box-shadow: 6px 6px 0 -2px var(--jade-wash); }
    .ct-channels { grid-template-columns: 1fr; }
    .ct-channels > li { padding: 22px 22px 24px; }
    .ct-partner { grid-template-columns: 1fr; padding: 24px 0 26px; }
    .ct-partner-head { margin-bottom: 2px; }
    .ct-faq summary { gap: 14px; padding: 17px 34px 17px 0; }
    .ct-faq-no { flex-basis: 24px; }
    .ct-faq details p { margin-left: 38px; }
    .ct-form { padding: 24px 20px 26px; }
    .ct-fields-row { grid-template-columns: 1fr; gap: 0; }
    .ct-form-foot { flex-direction: column; align-items: flex-start; gap: 12px; }
    .ct-form-foot .btn { width: 100%; }
}