/* ============================================================
   ExcelStudio 官方網站 — 設計系統
   品牌配色：專業藍（信任）+ Excel 綠（CTA / 行動）
   ============================================================ */

:root {
    --c-navy: #14304a;
    --c-blue: #1d6fb8;
    --c-blue-dark: #155a96;
    --c-green: #217346;       /* Excel 綠 */
    --c-green-dark: #1a5c38;
    --c-green-light: #2ea36a;
    --c-bg: #ffffff;
    --c-bg-soft: #f5f8fc;
    --c-bg-soft2: #eef3f9;
    --c-border: #e2e8f0;
    --c-ink: #1a2733;
    --c-ink-soft: #51606d;
    --c-ink-mute: #8595a3;
    --c-warn: #c0392b;

    --radius: 14px;
    --radius-sm: 9px;
    --shadow-sm: 0 1px 3px rgba(20, 48, 74, .08);
    --shadow: 0 8px 28px rgba(20, 48, 74, .10);
    --shadow-lg: 0 18px 50px rgba(20, 48, 74, .16);

    --maxw: 1160px;
    /* 西文/數字用 Inter（幾何精緻），中文落到 Noto Sans TC（可讀性最佳）——雙字體配對 */
    --font: "Inter", "Noto Sans TC", -apple-system, "Segoe UI", "Microsoft JhengHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    margin: 0;
    font-family: var(--font);
    color: var(--c-ink);
    background: var(--c-bg);
    line-height: 1.8;
    font-size: 17px;
    letter-spacing: .015em;           /* 中文內文微開字距，呼吸感 */
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* 中文標題不可用負字距（會擠住發悶）；行高 1.35 給全形字足夠空間 */
h1, h2, h3, h4 { line-height: 1.35; color: var(--c-navy); font-weight: 800; letter-spacing: .01em; }
h1 { font-size: clamp(1.9rem, 4.2vw, 3.1rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }

p { margin: 0 0 1rem; }
a { color: var(--c-blue); text-decoration: none; }
a:hover { color: var(--c-blue-dark); }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 78px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-navy { background: var(--c-navy); color: #fff; }
.section-navy h1, .section-navy h2, .section-navy h3 { color: #fff; }

.text-center { text-align: center; }
.eyebrow {
    display: inline-block;
    font-size: .82rem; font-weight: 800; letter-spacing: .08em;
    color: var(--c-green); text-transform: uppercase;
    margin-bottom: .7rem;
}
.lead { font-size: 1.15rem; color: var(--c-ink-soft); }
.muted { color: var(--c-ink-mute); }
.section-head { max-width: 760px; margin: 0 auto 48px; text-align: center; }
.section-head p { font-size: 1.12rem; color: var(--c-ink-soft); margin-top: .6rem; }

/* ---------- 按鈕 ---------- */
.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .85rem 1.7rem; border-radius: 999px;
    font-weight: 700; font-size: 1.02rem; cursor: pointer;
    border: 2px solid transparent; transition: all .18s ease;
    text-align: center; line-height: 1.2;
}
.btn-primary { background: var(--c-green); color: #fff; box-shadow: 0 6px 18px rgba(33,115,70,.28); }
.btn-primary:hover { background: var(--c-green-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(33,115,70,.34); }
.btn-line { background: #06c755; color: #fff; }
.btn-line:hover { background: #05a847; color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--c-navy); border-color: var(--c-border); }
.btn-outline:hover { border-color: var(--c-blue); color: var(--c-blue); }
.btn-ghost-light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.4); }
.btn-ghost-light:hover { background: rgba(255,255,255,.22); color: #fff; }
.btn-lg { padding: 1.05rem 2.2rem; font-size: 1.1rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-row.center { justify-content: center; }

/* ---------- 導覽列 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--c-border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 900; font-size: 1.25rem; color: var(--c-navy); }
.brand:hover { color: var(--c-navy); }
.brand-mark {
    width: 34px; height: 34px; border-radius: 8px;
    background: var(--c-green); color: #fff; font-weight: 900;
    display: grid; place-items: center; font-size: 1.1rem;
}
.brand-mark span { transform: translateY(-1px); }
.brand-mark-img { width: 34px; height: 34px; border-radius: 50%; display: block; flex: none; box-shadow: 0 1px 3px rgba(20,48,74,.18); }
.site-footer .brand-mark-img { box-shadow: none; border: 1px solid rgba(255,255,255,.14); }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--c-ink-soft); font-weight: 600; font-size: .98rem; padding: .5rem .8rem; border-radius: 8px; }
.nav-links a:hover { color: var(--c-navy); background: var(--c-bg-soft); }
.nav-cta { margin-left: 10px; }
/* 導覽列內的 CTA 按鈕：權重需高於 .nav-links a，避免文字色被蓋掉 */
.nav-links a.btn-primary, .nav-links a.btn-primary:hover { color: #fff; background: var(--c-green); }
.nav-links a.btn-primary:hover { background: var(--c-green-dark); }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.6rem; color: var(--c-navy); cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
    background: radial-gradient(1200px 500px at 75% -10%, rgba(33,115,70,.10), transparent 60%),
                linear-gradient(180deg, #f7fafd 0%, #ffffff 100%);
    padding: 76px 0 70px;
    border-bottom: 1px solid var(--c-border);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.hero h1 { margin: 0 0 1.1rem; }
.hero .hl { color: var(--c-green); }
.hero-sub { font-size: 1.18rem; color: var(--c-ink-soft); margin-bottom: 1.6rem; }
.hero-points { list-style: none; padding: 0; margin: 0 0 1.8rem; }
.hero-points li { padding-left: 30px; position: relative; margin-bottom: .5rem; font-weight: 600; color: var(--c-ink); }
.hero-points li::before {
    content: "✓"; position: absolute; left: 0; top: 0;
    color: var(--c-green); font-weight: 900;
}
.hero-card {
    background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
    box-shadow: var(--shadow-lg); overflow: hidden;
}
.hero-img { position: relative; }
.hero-img img {
    width: 100%; height: auto; border-radius: var(--radius);
    box-shadow: var(--shadow-lg); border: 1px solid var(--c-border);
}
.zoom-hint {
    position: absolute; right: 12px; bottom: 12px;
    background: rgba(20,48,74,.82); color: #fff; font-size: .82rem; font-weight: 700;
    padding: 5px 12px; border-radius: 999px; pointer-events: none;
    opacity: .9; transition: opacity .2s;
}
.hero-img:hover .zoom-hint { opacity: 1; }

/* ---------- 可放大圖片 + 燈箱 ---------- */
.zoomable { cursor: zoom-in; transition: filter .15s; }
.zoomable:hover { filter: brightness(1.03); }
.lightbox {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(8,18,28,.9); backdrop-filter: blur(2px);
    display: none; align-items: center; justify-content: center; padding: 28px; cursor: zoom-out;
}
.lightbox.open { display: flex; animation: lb-fade .18s ease; }
@keyframes lb-fade { from { opacity: 0; } to { opacity: 1; } }
.lightbox img { max-width: 96%; max-height: 92%; border-radius: 10px; box-shadow: 0 24px 70px rgba(0,0,0,.55); }
.lightbox-close {
    position: absolute; top: 16px; right: 24px; color: #fff; font-size: 2.4rem; line-height: 1;
    background: none; border: 0; cursor: pointer; opacity: .85;
}
.lightbox-close:hover { opacity: 1; }
.lightbox-hint { display: none; position: fixed; left: 0; right: 0; bottom: 14px; text-align: center; color: rgba(255,255,255,.9); font-size: .82rem; font-weight: 600; pointer-events: none; }
.hero-card-top { background: var(--c-navy); color: #fff; padding: 14px 18px; display: flex; align-items: center; gap: 8px; font-size: .9rem; }
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.r{background:#ff5f57}.dot.y{background:#febc2e}.dot.g{background:#28c840}
.hero-card-body { padding: 22px; }
.mock-row { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 8px; margin-bottom: 8px; }
.mock-cell { background: var(--c-bg-soft); border: 1px solid var(--c-border); border-radius: 6px; height: 30px; }
.mock-cell.h { background: var(--c-green); }
.mock-cell.b { background: #dff0e6; }

/* ---------- Logo 牆 ---------- */
.logo-strip { padding: 46px 0; border-bottom: 1px solid var(--c-border); }
.logo-strip .label { text-align: center; color: var(--c-ink-mute); font-weight: 700; font-size: .92rem; margin-bottom: 26px; letter-spacing: .03em; }
.logo-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 26px 30px; align-items: center; }
.logo-grid img {
    max-height: 46px; width: auto; margin: 0 auto;
    opacity: .92; transition: all .2s;
}
.logo-grid img:hover { opacity: 1; transform: scale(1.04); }
/* 個別 Logo 視覺偏小，放大 2 倍以平衡視覺 */
.logo-grid img[src*="sgs"],
.logo-grid img[src*="dbs-bank"],
.logo-grid img[src*="glico"] { max-height: 92px; }
.logo-grid img[src*="sgs"]:hover,
.logo-grid img[src*="dbs-bank"]:hover,
.logo-grid img[src*="glico"]:hover { transform: scale(1.04); }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
    background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
    padding: 28px; box-shadow: var(--shadow-sm); transition: all .2s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: #d3deea; }
.card h3 { margin: .2rem 0 .6rem; }
.card p { color: var(--c-ink-soft); margin: 0; font-size: .98rem; }
.card-icon {
    width: 50px; height: 50px; border-radius: 12px; display: grid; place-items: center;
    background: var(--c-bg-soft2); font-size: 1.5rem; margin-bottom: 14px;
}

/* 痛點卡 */
.pain-card { border-left: 4px solid var(--c-warn); }
.pain-card .card-icon { background: #fdecea; }

/* ---------- 解決方案 ---------- */
.solution { background: var(--c-navy); color: #fff; }
.solution h2 { color: #fff; }
.keep-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; margin-top: 8px; }
.keep-item { display: flex; align-items: center; gap: 12px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); padding: 16px 18px; border-radius: var(--radius-sm); }
.keep-item .k { width: 30px; height: 30px; border-radius: 50%; background: var(--c-green); display: grid; place-items: center; font-weight: 900; flex: none; }
.keep-item strong { font-size: 1.05rem; }

/* ---------- 案例 ---------- */
.case-card { overflow: hidden; padding: 0; display: flex; flex-direction: column; }
.case-media { position: relative; aspect-ratio: 16/10; background: var(--c-bg-soft2); overflow: hidden; }
.case-media img { width: 100%; height: 100%; object-fit: cover; }
.case-media .placeholder {
    position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
    color: var(--c-ink-mute); background: repeating-linear-gradient(45deg,#eef3f9,#eef3f9 12px,#e7eef6 12px,#e7eef6 24px);
    font-size: .9rem; padding: 16px;
}
.case-badge { position: absolute; top: 12px; left: 12px; background: rgba(20,48,74,.86); color: #fff; font-size: .8rem; font-weight: 700; padding: 5px 12px; border-radius: 999px; }
/* 案例詳細頁系統畫面（圖庫）— 突破內文寬度、置中加寬顯示 */
.case-gallery {
    margin: 28px 0;
    width: min(1080px, calc(100vw - 44px));
    position: relative; left: 50%; transform: translateX(-50%);
}
.case-gallery figure { margin: 0; }
.case-gallery img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--c-border); box-shadow: var(--shadow); }
.case-gallery .case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 16px; }
.gallery-hint { text-align: center; color: var(--c-ink-mute); font-size: .9rem; margin-top: 12px; }
@media (max-width: 640px) { .case-gallery .case-grid { grid-template-columns: 1fr; } }
.case-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case-body h3 { margin: 0 0 .3rem; }
.case-industry { color: var(--c-green); font-weight: 700; font-size: .88rem; }
.ba { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: stretch; margin: 16px 0; }
.ba-box { background: var(--c-bg-soft); border-radius: var(--radius-sm); padding: 12px 14px; }
.ba-box.after { background: #e7f5ee; }
.ba-label { font-size: .74rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; color: var(--c-ink-mute); }
.ba-box.after .ba-label { color: var(--c-green-dark); }
.ba-val { font-weight: 800; color: var(--c-navy); font-size: 1.02rem; line-height: 1.4; }
.ba-box.after .ba-val { color: var(--c-green-dark); }
.ba-arrow { display: grid; place-items: center; color: var(--c-green); font-size: 1.3rem; font-weight: 900; }
.case-body .btn { margin-top: auto; align-self: flex-start; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.step { position: relative; padding-top: 8px; }
.step-num {
    width: 46px; height: 46px; border-radius: 50%; background: var(--c-green); color: #fff;
    font-weight: 900; font-size: 1.2rem; display: grid; place-items: center; margin-bottom: 14px;
}
.step h3 { font-size: 1.15rem; margin: 0 0 .4rem; }
.step p { color: var(--c-ink-soft); font-size: .96rem; margin: 0; }
.step::after { content: ""; position: absolute; top: 31px; left: 58px; right: -11px; height: 2px; background: var(--c-border); z-index: 0; }
.steps .step:last-child::after { display: none; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border: 1px solid var(--c-border); border-radius: var(--radius-sm); margin-bottom: 14px; background: #fff; overflow: hidden; }
.faq-item summary {
    cursor: pointer; padding: 20px 24px; font-weight: 700; color: var(--c-navy); font-size: 1.08rem;
    list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.6rem; color: var(--c-green); font-weight: 400; flex: none; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body { padding: 0 24px 22px; color: var(--c-ink-soft); }
.faq-item .faq-body p:last-child { margin-bottom: 0; }

/* ---------- 最終 CTA ---------- */
.cta-band {
    background: linear-gradient(135deg, var(--c-green-dark), var(--c-green));
    color: #fff; border-radius: var(--radius); padding: 54px 40px; text-align: center;
    box-shadow: var(--shadow-lg);
}
.cta-band h2 { color: #fff; margin: 0 0 .8rem; }
.cta-band p { font-size: 1.15rem; opacity: .95; max-width: 620px; margin: 0 auto 1.8rem; }
.cta-band .btn-line { background: #fff; color: var(--c-green-dark); }
.cta-band .btn-line:hover { background: #f0f0f0; color: var(--c-green-dark); }

/* ---------- 內文（文章 / 法律頁）---------- */
.article { max-width: 800px; margin: 0 auto; }
.article h2 { margin-top: 2.4rem; padding-bottom: .4rem; border-bottom: 2px solid var(--c-bg-soft2); }
.article h3 { margin-top: 1.8rem; }
.article ul, .article ol { padding-left: 1.4rem; }
.article li { margin-bottom: .5rem; color: var(--c-ink-soft); }
.article p { color: var(--c-ink-soft); }
.callout { background: var(--c-bg-soft); border-left: 4px solid var(--c-green); border-radius: var(--radius-sm); padding: 18px 22px; margin: 1.6rem 0; }
.callout p { margin: 0; color: var(--c-ink); }

.page-hero { background: var(--c-bg-soft); border-bottom: 1px solid var(--c-border); padding: 56px 0; }
.page-hero h1 { margin: 0 0 .6rem; }
.page-hero p { font-size: 1.12rem; color: var(--c-ink-soft); margin: 0; max-width: 720px; }
.breadcrumb { font-size: .9rem; color: var(--c-ink-mute); margin-bottom: 1rem; }
.breadcrumb a { color: var(--c-ink-mute); }

/* SEO 文章索引 */
.article-links { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.article-link { display: block; padding: 22px 24px; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: #fff; transition: all .2s; }
.article-link:hover { border-color: var(--c-green); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.article-link h3 { margin: 0 0 .3rem; font-size: 1.1rem; }
.article-link span { color: var(--c-ink-soft); font-size: .94rem; }

/* ---------- 表單 ---------- */
.form-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 700; margin-bottom: 6px; color: var(--c-navy); font-size: .96rem; }
.form-group .req { color: var(--c-warn); }
.form-control {
    width: 100%; padding: .8rem 1rem; border: 1px solid var(--c-border); border-radius: var(--radius-sm);
    font-family: inherit; font-size: 1rem; color: var(--c-ink); background: #fff; transition: border .15s;
}
.form-control:focus { outline: none; border-color: var(--c-green); box-shadow: 0 0 0 3px rgba(33,115,70,.12); }
textarea.form-control { min-height: 130px; resize: vertical; }
.field-validation-error, .validation-summary-errors { color: var(--c-warn); font-size: .9rem; }
.alert { padding: 16px 20px; border-radius: var(--radius-sm); margin-bottom: 22px; }
.alert-success { background: #e7f5ee; border: 1px solid #b6e0c8; color: var(--c-green-dark); }
.alert-danger { background: #fdecea; border: 1px solid #f5c6cb; color: var(--c-warn); }
.contact-aside .card { margin-bottom: 16px; }
.contact-line { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 14px; }
.contact-line .ci { font-size: 1.3rem; flex: none; }
.contact-line .ct strong { display: block; color: var(--c-navy); }
.contact-line .ct span { color: var(--c-ink-soft); font-size: .95rem; }

/* 聯絡方式卡片（LINE / 電話 / Email） */
.contact-method { text-align: center; display: flex; flex-direction: column; }
.contact-method .cm-icon { font-size: 2.4rem; margin-bottom: 4px; }
.contact-method h3 { margin: 4px 0 8px; }
.contact-method p { margin: 0 0 12px; }
.contact-method .cm-value { font-weight: 800; color: var(--c-navy); font-size: 1.12rem; margin: 0 0 16px; word-break: break-word; }
.contact-method .btn { margin-top: auto; width: 100%; justify-content: center; }
.contact-method.featured { border-color: var(--c-green); box-shadow: 0 12px 32px rgba(33,115,70,.16); position: relative; overflow: visible; }
.contact-method .cm-badge {
    position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
    background: var(--c-green); color: #fff; font-size: .78rem; font-weight: 800;
    padding: 5px 15px; border-radius: 999px; white-space: nowrap; box-shadow: 0 4px 12px rgba(33,115,70,.3);
}
.contact-method .cm-hours { font-size: .82rem; color: var(--c-ink-mute); margin: -6px 0 16px; }
.contact-note { text-align: center; margin-top: 32px; color: var(--c-ink-soft); }

/* Google 評論徽章（社會證明，連到 Google 商家） */
.gbadge {
    display: inline-flex; align-items: center; gap: 8px;
    margin-top: 18px; padding: 8px 16px; border-radius: 999px;
    background: #fff; border: 1px solid var(--c-border); box-shadow: var(--shadow-sm);
    color: var(--c-ink-soft); font-size: .92rem; font-weight: 600;
    transition: all .18s;
}
.gbadge:hover { box-shadow: var(--shadow); color: var(--c-ink); transform: translateY(-1px); }
.gbadge .gb-stars { color: #fbbc04; letter-spacing: 2px; font-size: 1rem; }
.gbadge strong { color: var(--c-navy); }

/* 工作室位置（地址＋地圖） */
.contact-location { display: grid; grid-template-columns: 1fr 1.3fr; gap: 28px; align-items: stretch; margin-top: 40px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.contact-location .loc-info h3 { margin: 0 0 12px; }
.contact-location .loc-addr { font-size: 1.15rem; font-weight: 800; color: var(--c-navy); margin: 0 0 8px; }
.contact-location .loc-hours { color: var(--c-ink-soft); margin: 0 0 14px; }
.contact-location .loc-warn {
    background: #fdecea; border: 1.5px solid #f0c3bd; border-radius: var(--radius-sm);
    padding: 12px 16px; margin: 0 0 16px; color: #8c2f24; font-size: .95rem; line-height: 1.65;
}
.contact-location .loc-warn strong { display: block; color: var(--c-warn); margin-bottom: 2px; }
.foot-note { font-size: .82rem; color: #9fb2c2; }
.contact-location .loc-map { min-height: 260px; }
.contact-location .loc-map iframe { width: 100%; height: 100%; min-height: 260px; border: 0; border-radius: var(--radius-sm); }
@media (max-width: 640px) { .contact-location { grid-template-columns: 1fr; } }

/* ---------- 頁尾 ---------- */
.site-footer { background: var(--c-navy); color: #c7d4e0; padding: 56px 0 28px; }
.site-footer a { color: #c7d4e0; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
.footer-brand .brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { color: #9fb3c6; font-size: .95rem; }
.footer-col h4 { color: #fff; font-size: 1rem; margin: 0 0 14px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 9px; font-size: .95rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: .88rem; color: #8ea3b8; }

/* ---------- 浮動 LINE 按鈕 ---------- */
.float-line {
    position: fixed; right: 22px; bottom: 22px; z-index: 90;
    background: #06c755; color: #fff; padding: 14px 22px; border-radius: 999px;
    font-weight: 800; box-shadow: 0 8px 24px rgba(6,199,85,.4); display: flex; align-items: center; gap: 8px;
}
.float-line:hover { background: #05a847; color: #fff; transform: translateY(-2px); }

/* ---------- RWD ---------- */
@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero-card, .hero-img { max-width: 460px; margin-left: auto; margin-right: auto; }
    .grid-3, .grid-4 { grid-template-columns: repeat(2,1fr); }
    .logo-grid { grid-template-columns: repeat(4,1fr); }
    .steps { grid-template-columns: repeat(2,1fr); }
    .step::after { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-links { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    body { font-size: 16px; }
    .section { padding: 52px 0; }

    /* Hero：縮小手機上方過大的留白，標題略縮 */
    .hero { padding: 30px 0 44px; }
    .hero h1 { font-size: 1.92rem; }
    .hero-sub { font-size: 1.06rem; }

    /* 行動選單：改為有框線、底色、圓角的浮動卡片 */
    .nav-links {
        position: absolute; top: 62px; right: 12px; left: 12px;
        flex-direction: column; align-items: stretch;
        background: #fff; border: 1px solid var(--c-border); border-radius: 14px;
        padding: 8px; gap: 2px; box-shadow: 0 18px 44px rgba(20,40,70,.20);
        display: none;
    }
    .nav-links.open { display: flex; }
    .nav-links li a { display: block; padding: 13px 14px; border-radius: 10px; font-size: 1.02rem; }
    .nav-links li a:hover, .nav-links li a:active { background: var(--c-bg-soft); color: var(--c-navy); }
    .nav-links .nav-cta { margin-top: 6px; padding-top: 10px; border-top: 1px solid var(--c-border); }
    .nav-links .nav-cta a.btn-primary { display: flex; justify-content: center; width: 100%; padding: 13px; }
    .nav-toggle { display: block; }

    /* 按鈕：手機一律等寬、置中、垂直堆疊，避免長短不一 */
    .btn-row { flex-direction: column; align-items: stretch; gap: 12px; }
    .btn-row .btn { width: 100%; justify-content: center; }

    .grid-2, .grid-3, .grid-4, .keep-list { grid-template-columns: 1fr; }
    .logo-grid { grid-template-columns: repeat(3,1fr); gap: 20px; }
    .steps { grid-template-columns: 1fr; }
    .ba { grid-template-columns: 1fr; }
    .ba-arrow { transform: rotate(90deg); }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .cta-band { padding: 40px 24px; }
    .float-line { right: 14px; bottom: 14px; padding: 12px 18px; }

    /* 點圖放大：手機改滿版；寬幅圖自動旋轉為橫向，放到最大、看得最清楚 */
    .lightbox { padding: 0; }
    .lightbox img { max-width: 100%; max-height: 100%; border-radius: 0; }
    .lightbox.rotate img { transform: rotate(90deg); max-width: 96vh; max-height: 96vw; border-radius: 4px; }
    .lightbox.open .lightbox-hint { display: block; }
}