:root{--bg:#f6f7fb;--card:#fff;--text:#1d2433;--muted:#6b7280;--brand:#4f46e5;--brand-d:#4338ca;--brand-l:#eef2ff;--line:#e5e7eb;--ok:#059669}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,"Noto Sans TC","Microsoft JhengHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.narrow{max-width:860px}

/* nav */
.nav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:22px;letter-spacing:.5px;color:var(--brand);white-space:nowrap}
.logo-icon{width:30px;height:30px;flex:none}
@media(max-width:640px){.logo-icon{width:24px;height:24px}}
.nav ul li{white-space:nowrap}
.nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0;align-items:center}
.nav a.link{color:var(--muted);font-size:15px}
.nav a.link:hover,.nav a.link.active{color:var(--text)}
@media(max-width:640px){.nav ul{gap:12px}.nav a.link{font-size:13px}.logo{font-size:17px}}

/* buttons */
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:10px;padding:12px 22px;font-size:16px;font-weight:600;cursor:pointer}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.line{background:#06C755}
.btn.line:hover{background:#05a948}
.btn.block{display:block;width:100%;text-align:center;margin-top:16px}
.nav .btn{padding:8px 16px;font-size:14px}

/* hero */
.hero{padding:72px 0 56px;text-align:center}
.hero h1{font-size:42px;line-height:1.25;margin:0 0 16px}
.hero p{font-size:18px;color:var(--muted);max-width:620px;margin:0 auto 28px}
.hero .actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
@media(max-width:640px){.hero h1{font-size:30px}.hero{padding:48px 0 36px}}
.hero.compact{padding:40px 0 24px}
.hero.compact h1{font-size:32px;margin-bottom:10px}
.hero.compact p{font-size:16px;margin-bottom:0}
@media(max-width:640px){.hero.compact h1{font-size:24px}}

/* sections */
section{padding:48px 0}
section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:28px;margin:0 0 8px}
.lead{color:var(--muted);margin:0 0 28px}
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:800px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:15px}
.icon{font-size:28px;margin-bottom:8px}
.num-big{font-size:34px;font-weight:800;color:var(--brand);line-height:1.2}
.tag{display:inline-block;background:var(--brand-l);color:var(--brand);border-radius:99px;padding:2px 12px;font-size:13px;font-weight:600;margin-bottom:10px}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px;text-align:center}
.metrics b{display:block;font-size:20px}
.metrics span{font-size:12px;color:var(--muted)}
.sample{font-size:12px;color:var(--muted);margin-top:10px}
#lead{scroll-margin-top:76px}
.card.case h3{font-size:17px;line-height:1.4}
.metrics.bad b{color:#b45309;font-size:16px}
.card.case dl{margin:14px 0 0}
.card.case dt{font-weight:700;font-size:13px;color:var(--muted);margin-top:10px}
.card.case dt.fix{color:var(--ok)}
.card.case dd{margin:2px 0 0;font-size:15px}
a.link-card{display:block;color:inherit;transition:box-shadow .15s,transform .15s}
a.link-card:hover{box-shadow:0 6px 18px rgba(79,70,229,.12);transform:translateY(-2px)}
.card.case .excerpt{margin:14px 0 0;font-size:15px;color:var(--text)}
.card.case .more{display:inline-block;margin-top:12px;font-weight:700;color:var(--brand);font-size:15px}
.detail{max-width:720px;margin:0 auto;padding:28px 0 8px}
.page-head .lead .en{display:block;margin-top:6px;font-size:15px;font-style:italic}
.detail .quote .en{display:block;margin-top:4px;font-style:italic}
.detail .quote{margin:0 0 22px;padding:2px 0 2px 14px;border-left:3px solid var(--brand);font-size:14px;line-height:1.7;color:var(--muted)}
.detail .back{display:inline-block;color:var(--muted);font-size:14px;margin-bottom:14px}
.detail .back:hover{color:var(--brand)}
.detail h1{font-size:28px;line-height:1.35;margin:6px 0 8px}
.detail h2{font-size:20px;margin:30px 0 8px}
.detail p{font-size:16.5px;line-height:1.95;margin:0 0 14px}
.detail .metrics{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;margin:16px 0 4px}
.fixbox{background:#ecfdf5;border:1px solid #a7f3d0;border-radius:14px;padding:6px 20px 8px;margin-top:26px}
.fixbox h2{margin-top:14px;color:#047857}
.pager{display:flex;justify-content:space-between;gap:14px;font-size:14px}
.pager a{color:var(--brand);max-width:48%}
@media(max-width:640px){.detail h1{font-size:23px}}

/* steps */
.step{display:flex;gap:14px}
.step .n{flex:none;width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700}

/* cta band */
.cta{background:var(--brand);color:#fff;text-align:center;padding:52px 20px;border-radius:18px}
.cta h2{margin-bottom:8px}
.cta p{opacity:.9;margin:0 0 20px}
.cta .btn{background:#fff;color:var(--brand)}

/* forms */
label{display:block;font-weight:600;margin:14px 0 6px}
select,input[type=text],input[type=email],input[type=tel],textarea{width:100%;padding:11px 12px;border:1px solid #d5d9e6;border-radius:10px;font-size:16px;background:#f1f3f9;font-family:inherit;transition:background .15s,border-color .15s,box-shadow .15s}
select:hover,input[type=text]:hover,input[type=email]:hover,input[type=tel]:hover,textarea:hover{border-color:#b9bfd3}
select:focus,input[type=text]:focus,input[type=email]:focus,input[type=tel]:focus,textarea:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.18)}
::placeholder{color:#9aa1b5}
textarea{min-height:100px;resize:vertical}
input[type=range]{width:100%}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:600px){.row{grid-template-columns:1fr}}
.ok{display:none;color:var(--ok);font-weight:600;margin-top:12px}

/* calculator */
.budget-val{font-size:30px;font-weight:700;color:var(--brand)}
/* 預算滑桿：加粗軌道、加大拉柄，方便拖曳與手機操作 */
#budgetRange{-webkit-appearance:none;appearance:none;width:100%;height:14px;margin:14px 0 6px;border-radius:99px;outline:none;cursor:pointer;touch-action:pan-y;
  background:linear-gradient(to right,var(--brand) var(--pct,12%),#dfe3ee var(--pct,12%))}
#budgetRange::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:34px;height:34px;border-radius:50%;background:#fff;border:4px solid var(--brand);box-shadow:0 2px 8px rgba(79,70,229,.35);cursor:grab}
#budgetRange::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:#fff;border:4px solid var(--brand);box-shadow:0 2px 8px rgba(79,70,229,.35);cursor:grab}
#budgetRange:active::-webkit-slider-thumb{cursor:grabbing;transform:scale(1.08)}
#budgetRange:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 4px rgba(79,70,229,.25)}
.presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.presets button{background:#fff;border:1px solid #d5d9e6;border-radius:99px;padding:5px 14px;font-size:14px;cursor:pointer;color:var(--text)}
.presets button:hover{border-color:var(--brand);color:var(--brand)}
.presets button.on{background:var(--brand);border-color:var(--brand);color:#fff}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:6px}
@media(max-width:600px){.stats{grid-template-columns:1fr}}
.stat{background:var(--bg);border-radius:12px;padding:14px;text-align:center}
.stat b{display:block;font-size:22px}
.stat span{color:var(--muted);font-size:13px}
table{width:100%;border-collapse:collapse;margin-top:10px;font-size:15px}
th,td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left}
th{color:var(--muted);font-weight:600;font-size:13px}
td.num,th.num{text-align:right;white-space:nowrap}
.bar{height:8px;border-radius:4px;background:var(--brand);min-width:2px}
.note{color:var(--muted);font-size:13px;margin-top:10px}
.muted{color:var(--muted)}
.row3{grid-template-columns:repeat(3,1fr)}
@media(max-width:700px){.row3{grid-template-columns:1fr}}
.warn{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:10px;padding:10px 14px;font-size:14px;margin:12px 0}
.cnt{display:flex;align-items:center;gap:8px;white-space:nowrap}
.cnt input[type=range]{width:120px}
.cnt b{display:inline-block;min-width:22px;text-align:right}
@media(max-width:600px){.cnt input[type=range]{width:80px}}

/* 隱私權政策等長文頁面 */
.prose h2{font-size:19px;margin:26px 0 6px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{font-size:16px;line-height:1.9;color:var(--text)}
.prose ul{margin:6px 0 10px;padding-left:22px}
.form-note{font-size:13px;color:var(--muted);margin:10px 0 0;text-align:center}
.form-note a{color:var(--brand);text-decoration:underline}

/* 一年觸及走勢圖 */
.trend-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.seg{display:inline-flex;border:1px solid #d5d9e6;border-radius:99px;overflow:hidden;background:#f1f3f9}
.seg button{border:0;background:transparent;padding:6px 14px;font-size:14px;cursor:pointer;color:var(--muted);font-family:inherit}
.seg button.on{background:var(--brand);color:#fff}
.chart-wrap{position:relative;color:var(--text)}
#trendSvg{display:block;width:100%;height:auto;touch-action:pan-y;overflow:visible}
.tip{display:none;position:absolute;top:8px;z-index:2;min-width:180px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,.12);padding:8px 12px;font-size:13px;pointer-events:none}
.tip b{display:block;margin-bottom:4px}
.tip div{display:flex;align-items:center;gap:6px;padding:1px 0}
.tip div span{margin-left:auto;font-weight:700;padding-left:12px}
.tip i,.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;flex:none}
.keys{display:flex;gap:18px;font-size:14px;margin:6px 0 10px;flex-wrap:wrap}
.keys span{display:inline-flex;align-items:center;gap:6px}
.keys i.bar{width:14px;height:12px;border-radius:3px}
.keys i.line{width:18px;height:4px;border-radius:2px}
.keys i.dash{height:0;border-top:3px dashed currentColor;background:transparent!important;border-radius:0}
.tstats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.tstats b{font-size:17px}
.tstats div{background:var(--bg);border-radius:12px;padding:10px 8px;text-align:center}
.tstats b{display:block;font-size:19px}
.tstats span{font-size:12px;color:var(--muted)}
@media(max-width:600px){.tstats{grid-template-columns:1fr}}
.legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:6px 16px;margin-top:6px}
.legend .lg{display:flex;align-items:center;gap:8px;font-size:14px;padding:4px 8px;border-radius:8px}
.legend .lg b{margin-left:auto}
.legend .lg.on{background:var(--brand-l)}

/* filter */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{border:1px solid var(--line);background:#fff;border-radius:99px;padding:6px 16px;cursor:pointer;font-size:14px}
.chip.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* footer */
footer{padding:36px 0;color:var(--muted);font-size:14px;text-align:center}
.page-head{padding:44px 0 8px}
.page-head h1{font-size:34px;margin:0 0 8px}