/* KeaQ Warranty — 依 2026 Brand Identity Guidelines v01 */
:root{
  --black:#1A1A1A; --gray:#9A9A9A; --white:#FAFAFA;
  --blue:#0F4C81; --cotton:#F9FCFE; --light:#E5E5E5;
  --ink-2:#5E5E5E; --line:#D4D4D4; --err:#B3261E; --ok:#1F6E43;
  --r-xl:44px; --r-lg:24px; --r-md:14px;
  --en:'Montserrat',system-ui,sans-serif;
  --zh:'GenYoGothic TW','源樣黑體','Noto Sans TC','PingFang TC','Microsoft JhengHei',sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--black);color:var(--black);font-family:var(--en),var(--zh);font-feature-settings:"palt";line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue)}
img{display:block;max-width:100%}
[hidden]{display:none!important}

/* ---- 外框：沿用包裝的大圓角 ---- */
.shell{max-width:1200px;margin:0 auto;padding:28px 20px 40px}
.frame{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);background:radial-gradient(120% 60% at 10% 0%,#2a2a2a 0%,#141414 45%,#0d0d0d 100%);border-radius:var(--r-xl);overflow:hidden;overflow:clip;min-height:calc(100vh - 68px)}
@media (max-width:900px){.frame{grid-template-columns:1fr;border-radius:28px;min-height:0}.shell{padding:12px 10px 24px}}

/* ---- 左：品牌面板 ---- */
.brand{position:sticky;top:0;align-self:start;height:min(100vh - 56px,900px);color:var(--white);padding:52px 48px;display:flex;flex-direction:column;gap:40px}
.brand-top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-top img{width:118px}
.kicker{font-size:11px;letter-spacing:.28em;color:var(--gray);font-weight:500;text-transform:uppercase}
.brand h1{font-family:var(--zh);font-weight:500;font-size:clamp(28px,3.2vw,40px);line-height:1.3;margin:0;letter-spacing:.04em}
.brand h1 small{display:block;font-family:var(--en);font-size:12px;letter-spacing:.32em;color:var(--gray);margin-bottom:14px;font-weight:500}
.lead{font-family:var(--zh);color:#cfcfcf;font-size:15px;margin:16px 0 0;max-width:30em}
.lead b{color:var(--white);font-weight:500}
.rule{height:1px;background:var(--white);opacity:.9;margin:0}
.dash{border:0;border-top:1px dashed #5a5a5a;margin:0}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:18px;font-family:var(--zh)}
.steps li{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:start}
.steps .n{font-family:var(--en);font-weight:600;font-size:13px;letter-spacing:.1em;color:var(--gray);padding-top:2px}
.steps strong{display:block;font-weight:500;font-size:15px}
.steps span{color:#a8a8a8;font-size:13px}
.brand-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:11px;letter-spacing:.24em;color:var(--gray)}
.dots{display:flex;gap:10px}
.dots i{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--white);display:block}
.dots i+i{background:var(--white)}
@media (max-width:900px){.brand{position:relative;height:auto;padding:30px 24px 28px;gap:22px}.brand-top .kicker,.brand .steps,.brand-foot,.brand .dash{display:none}.brand-top img{width:96px}}

/* ---- 右：表單面板 ---- */
.panel{background:var(--white);padding:52px 56px 44px;border-radius:var(--r-xl) 0 0 var(--r-xl)}
@media (max-width:900px){.panel{border-radius:24px 24px 0 0;padding:28px 20px 28px}}
.panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:1px solid var(--black);padding-bottom:14px;margin-bottom:8px}
.panel-head h2{margin:0;font-family:var(--zh);font-weight:500;font-size:22px;letter-spacing:.04em}
.panel-head .kicker{color:var(--ink-2)}

.sec{padding:26px 0 6px;border-bottom:1px dashed var(--gray)}
.sec:last-of-type{border-bottom:0}
.sec-h{display:flex;align-items:center;gap:14px;margin:0 0 18px}
.sec-h .no{font-weight:600;font-size:12px;letter-spacing:.12em;color:var(--white);background:var(--black);border-radius:999px;padding:3px 10px}
.sec-h h3{margin:0;font-family:var(--zh);font-weight:500;font-size:16px;letter-spacing:.06em}
.sec-h .en{font-size:11px;letter-spacing:.22em;color:var(--gray);margin-left:auto;text-transform:uppercase}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
.grid .full{grid-column:1/-1}
@media (max-width:600px){.grid{grid-template-columns:1fr}}

.field label,.lbl{display:block;font-family:var(--zh);font-size:13px;font-weight:500;margin:0 0 6px;letter-spacing:.04em}
.req{color:var(--blue);margin-left:2px}
.opt{color:var(--gray);font-weight:400;font-size:12px;margin-left:2px}
.field input,.field select{width:100%;font:inherit;font-family:var(--en),var(--zh);font-size:16px;color:var(--black);background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:12px 14px;outline:none;transition:border-color .15s,box-shadow .15s;appearance:none;-webkit-appearance:none}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--black) 50%),linear-gradient(135deg,var(--black) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:38px}
.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(15,76,129,.14)}
.field input::placeholder{color:#b3b3b3}
.field.invalid input,.field.invalid select,.field.invalid .drop{border-color:var(--err)}
#f-items.invalid .sn-row:not(.bad) input{border-color:var(--line)}
.hint{font-family:var(--zh);font-size:12px;color:var(--ink-2);margin-top:6px}
.err{font-family:var(--zh);font-size:12px;color:var(--err);margin-top:6px;display:none}
.field.invalid .err{display:block}

/* 序號列 */
.sn-list{display:grid;gap:12px}
.sn-row{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start}
.sn-row input{flex:1 1 0;min-width:0;text-transform:uppercase;letter-spacing:.08em;font-weight:500}
.sn-row.bad input{border-color:var(--err)}
.sn-del{flex:none;border:1px solid var(--line);background:#fff;border-radius:var(--r-md);width:48px;height:48px;cursor:pointer;font-size:20px;color:var(--ink-2)}
.sn-del:hover{border-color:var(--black);color:var(--black)}
.sn-status{flex:0 0 100%;font-family:var(--zh);font-size:13px;display:none;align-items:flex-start;gap:8px;padding:10px 12px;border-radius:12px}
.sn-status.show{display:flex}
.sn-status.ok{background:var(--cotton);border:1px solid #cfe0ee;color:var(--black)}
.sn-status.ok b{font-weight:500}
.sn-status.ok .tag{color:var(--blue);font-size:12px;display:block}
.sn-status.bad{background:#fdf3f2;border:1px solid #f0cfcb;color:var(--err)}
.sn-status.wait{color:var(--ink-2)}
.tri{flex:none;width:10px;height:10px;margin-top:6px;background:currentColor;clip-path:polygon(100% 0,100% 100%,0 100%)}
.sn-status.ok .tri{color:var(--blue)}
.add-sn{margin-top:12px;display:inline-flex;align-items:center;gap:8px;background:none;border:1px dashed var(--gray);border-radius:999px;padding:8px 16px;font:inherit;font-family:var(--zh);font-size:13px;cursor:pointer;color:var(--black)}
.add-sn:hover{border-style:solid;border-color:var(--black)}
.where{font-family:var(--zh);font-size:12px;color:var(--blue);background:none;border:0;padding:0;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.where-box{display:none;margin:0 0 10px;font-family:var(--zh);font-size:13px;background:var(--light);border-radius:12px;padding:12px 14px;color:var(--ink-2)}
.where-box.show{display:block}
.where-box .sn-ex{display:inline-block;font-family:var(--en);font-weight:600;color:var(--black);background:#fff;border:1px solid var(--line);border-radius:8px;padding:3px 10px;margin:6px 0;letter-spacing:.04em}

/* 上傳 */
.field .drop,.drop{position:relative;display:flex;align-items:center;gap:14px;border:1px dashed var(--gray);border-radius:var(--r-md);padding:16px;background:#fff;cursor:pointer;transition:border-color .15s,background .15s;margin:0}
.drop:hover,.drop.over{border-color:var(--blue);background:var(--cotton)}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer}
.drop .ic{flex:none;width:44px;height:44px;border-radius:12px;background:var(--black);display:grid;place-items:center}
.drop .ic svg{width:20px;height:20px}
.drop .t{font-family:var(--zh);font-size:14px;word-break:break-all}
.drop .s{font-size:12px;color:var(--ink-2);font-family:var(--zh)}
.drop img.thumb{width:44px;height:44px;object-fit:cover;border-radius:10px;flex:none}

/* 勾選 */
.check{display:grid;grid-template-columns:22px 1fr;gap:4px 12px;align-items:start;font-family:var(--zh);font-size:14px;margin:0 0 14px;cursor:pointer}
.check input{appearance:none;-webkit-appearance:none;width:22px;height:22px;border:1.5px solid var(--black);border-radius:6px;margin:1px 0 0;display:grid;place-content:center;cursor:pointer;background:#fff}
.check input:checked{background:var(--black)}
.check input:checked::after{content:"";width:11px;height:6px;border:2px solid var(--white);border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px)}
.check input:focus-visible{outline:3px solid rgba(15,76,129,.3);outline-offset:2px}
.check.invalid input{border-color:var(--err)}
.check .err{grid-column:2;margin-top:0}
.check.invalid .err{display:block}

/* 按鈕：黑底 + 品牌三角 */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;width:100%;margin-top:22px;border:0;border-radius:999px;background:var(--black);color:var(--white);font:inherit;font-family:var(--zh);font-size:16px;letter-spacing:.12em;padding:17px 24px;cursor:pointer;transition:background .15s,transform .05s}
.btn:hover{background:#000}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn .arr{width:12px;height:12px;background:var(--white);clip-path:polygon(100% 0,100% 100%,0 100%)}
.btn .spin{width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite;display:none}
.btn.loading .spin{display:block}.btn.loading .arr{display:none}
@keyframes sp{to{transform:rotate(360deg)}}
.form-msg{display:none;margin-top:14px;font-family:var(--zh);font-size:13px;color:var(--err);text-align:center}
.form-msg.show{display:block}

/* 完成畫面 */
.done{display:none;padding-top:10px}
.done.show{display:block}
.done .mark{width:56px;height:56px;border-radius:50%;background:var(--black);display:grid;place-items:center;margin:20px 0 18px}
.done .mark span{width:20px;height:11px;border:2.5px solid var(--white);border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-2px)}
.done h3{font-family:var(--zh);font-weight:500;font-size:24px;margin:0 0 6px}
.done p{font-family:var(--zh);color:var(--ink-2);margin:0 0 22px;font-size:14px}
.cert{border-top:1px solid var(--black)}
.cert-item{padding:16px 0;border-bottom:1px dashed var(--gray);display:grid;grid-template-columns:1fr auto;gap:4px 16px}
.cert-item .p{font-family:var(--zh);font-weight:500}
.cert-item .sn{font-size:13px;color:var(--ink-2);letter-spacing:.06em}
.cert-item .end{grid-row:1/3;grid-column:2;text-align:right;font-size:12px;color:var(--ink-2);font-family:var(--zh)}
.cert-item .end b{display:block;font-family:var(--en);font-size:18px;color:var(--blue);font-weight:600;letter-spacing:.02em}
.ghost{display:inline-flex;margin-top:22px;border:1px solid var(--black);border-radius:999px;background:none;padding:11px 22px;font:inherit;font-family:var(--zh);font-size:14px;cursor:pointer}

.demo{font-family:var(--zh);font-size:12px;background:var(--light);border-radius:12px;padding:10px 14px;margin:16px 0 0;color:var(--ink-2)}
.demo code{font-family:var(--en);color:var(--black);font-weight:600}

/* 頁尾 */
.foot{max-width:1200px;margin:0 auto;padding:6px 28px 36px;color:var(--gray);font-size:12px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-family:var(--zh)}
.foot a{color:var(--gray)}
.foot .links{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.line-btn img{height:36px;width:auto}
.line-box{margin-top:26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:var(--light);border-radius:16px;padding:16px 18px;font-family:var(--zh)}
.line-box b{display:block;font-weight:500;font-size:14px}
.line-box span{font-size:13px;color:var(--ink-2)}

/* ---- 條款頁 ---- */
.doc{max-width:880px;margin:0 auto;padding:28px 20px 40px}
.doc-card{background:var(--white);border-radius:var(--r-xl);overflow:hidden}
.doc-head{background:radial-gradient(120% 120% at 0% 0%,#2a2a2a 0%,#141414 60%);color:var(--white);padding:40px 48px 36px;position:relative}
.doc-head .top{display:flex;justify-content:space-between;align-items:center;margin-bottom:34px}
.doc-head img{width:96px}
.doc-head h1{font-family:var(--zh);font-weight:500;font-size:clamp(22px,3vw,30px);margin:0;letter-spacing:.04em}
.doc-head .kicker{display:block;margin-bottom:10px}
.doc-body{padding:36px 48px 44px;font-family:var(--zh);font-size:15px}
.doc-body h2{font-weight:500;font-size:17px;margin:32px 0 12px;padding-top:24px;border-top:1px dashed var(--gray);display:flex;gap:12px;align-items:baseline}
.doc-body h2:first-of-type{border-top:1px solid var(--black)}
.doc-body h2 .no{font-family:var(--en);font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--gray)}
.doc-body ol,.doc-body ul{padding-left:1.4em;margin:8px 0}
.doc-body li{margin:6px 0}
.doc-body .note{background:var(--light);border-radius:14px;padding:14px 18px;font-size:14px;color:var(--ink-2)}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 8px}
.toc a{font-size:13px;text-decoration:none;color:var(--black);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.toc a:hover{border-color:var(--black)}
.back{display:inline-flex;align-items:center;gap:8px;color:var(--white);text-decoration:none;font-size:13px;letter-spacing:.06em;border:1px solid #555;border-radius:999px;padding:6px 14px}
@media (max-width:700px){.doc-head{padding:28px 22px}.doc-body{padding:24px 22px 32px}.doc-card{border-radius:28px}}