* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

body {
    /* background 已移除：底色由 html 提供，body 刷背景会盖住 body::before 的极光色雾层 */
    min-height: 100vh;
    padding: 56px 24px 60px;
    display: flex;
    justify-content: center;
}

.wrap {
    width: 800px;
    max-width: 100%;
}

/* ---- 头部 ---- */
.head { text-align: center; margin-bottom: 30px; }
.head h1 {
    font-size: 27px;
    font-weight: 700;
    color: #0f172a;
    letter-spacing: .5px;
}
.head p { font-size: 14px; color: #94a3b8; margin-top: 9px; }

/* ---- 步骤卡 ---- */
.card {
    background: #fff;
    border: 1px solid #e6ebf2;
    border-radius: 20px;
    padding: 28px 34px 28px;
    box-shadow: 0 10px 34px -14px rgba(23, 52, 99, .1);
}

.step { display: flex; gap: 20px; }
.step + .step { margin-top: 34px; }

.rail { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.rail .num {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #eef4ff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.rail .num svg { display: block; }
.rail .line { flex: 1; width: 0; border-left: 2px dashed #d8e0ea; margin-top: 6px; }

.step .body { flex: 1; min-width: 0; padding-bottom: 4px; }

/* 标签行与左侧圆图标（34px）垂直居中对齐：min-height 撑到同高，内部改用 center 对齐 */
.lab { display: flex; align-items: center; justify-content: space-between; min-height: 34px; margin-bottom: 10px; }
.lab b { font-size: 16px; color: #0f172a; font-weight: 600; }
.lab span { font-size: 12.5px; color: #94a3b8; }

.box {
    position: relative;
    border: 1.5px dashed #d8e0ea;
    border-radius: 14px;
    background: #fafcfe;
    transition: border-color .2s, box-shadow .2s;
}
.box.dragover { border-color: #3b82f6; background: #eff6ff; }
.box:focus-within { border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(37, 99, 235, .1); }

.up {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 12px;
    color: #3b82f6;
    background: #eef4ff;
    border: 1px solid #dbeafe;
    border-radius: 8px;
    padding: 4px 11px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: background .15s;
    z-index: 1;
}
.up:hover { background: #dbeafe; }

.text-input {
    display: block;
    width: 100%;
    height: 190px;
    border: none;
    outline: none;
    resize: none;
    background: transparent;
    padding: 16px 18px;
    font: 13px/1.75 Consolas, 'JetBrains Mono', monospace;
    color: #44546b;
    border-radius: 14px;
}
.text-input::placeholder { color: #9dabbd; }

.file-input { display: none; }

/* ---- 操作区 ---- */
.actions { display: flex; justify-content: center; gap: 12px; margin-top: 34px; }
.btn {
    height: 42px;
    border-radius: 10px;
    border: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    transition: box-shadow .2s, opacity .2s;
    letter-spacing: .3px;
}
.btn.primary {
    padding: 0 38px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    box-shadow: 0 6px 16px -5px rgba(47, 111, 240, .5);
}
.btn.primary:hover { box-shadow: 0 10px 22px -5px rgba(47, 111, 240, .6); }
.btn.primary:disabled { opacity: .55; cursor: default; box-shadow: none; }
.btn.ghost {
    padding: 0 24px;
    background: #fff;
    border: 1.5px solid #d8e0ea;
    color: #64748b;
    font-size: 13.5px;
    font-weight: 500;
}
.btn.ghost:hover { border-color: #cbd5e1; color: #44546b; }

/* ---- 加载 ---- */
.loading { display: none; text-align: center; padding: 22px 0 6px; }
.loading p { color: #0f172a; font-weight: 450; font-size: 14px; }
.spinner {
    border: 3.5px solid rgba(37, 99, 235, .12);
    border-radius: 50%;
    border-top-color: #3b82f6;
    width: 34px;
    height: 34px;
    animation: spin .9s linear infinite;
    margin: 0 auto 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- 错误 ---- */
.error-message {
    color: #e54545;
    background: rgba(229, 69, 69, .04);
    padding: 12px 18px;
    border-radius: 10px;
    margin-top: 18px;
    display: none;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(229, 69, 69, .1);
    font-size: 14px;
}
.error-message svg { flex-shrink: 0; }

/* ---- 结果区域 ---- */
.result-area { display: none; }
.result-area.has-result { display: block; }
/* 「解析结果」整个步骤（图标+标题+虚线）在没有任何解析结果时整块隐藏，出结果才出现 */
.step-result { display: none; }
.step-result:has(.result-area.has-result) { display: flex; }
/* 空态时「证书内容」左侧的竖虚线也没了指向对象，一并隐藏 */
.card:not(:has(.result-area.has-result)) .rail .line { display: none; }

/* ===== 证书链（与检测工具同款样式） ===== */
.chain-head {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: #0f172a;
    margin: 2px 0 14px;
}
.cert-list{display:flex;flex-direction:column;gap:0;list-style:none}
.cert{position:relative;padding-left:30px;padding-bottom:12px}
.cert::before{content:'';position:absolute;left:14.5px;top:36.5px;bottom:-15.5px;width:1px;background:#d8e0ea}
.cert:last-child::before{display:none}
/* 圆点：默认灰色小号，hover/展开才变蓝 —— 视觉重心还给文字 */
.cert-node{position:absolute;left:10.5px;top:21.5px;width:9px;height:9px;border-radius:50%;background:#b7c5d5;transition:background .15s}
.cert:hover .cert-node,.cert:has(.cert-card[data-open="true"]) .cert-node{background:#2563eb}
.cert.is-warn .cert-node{background:#a85c07}
.cert.is-bad .cert-node{background:#cf2b1e}
.cert:last-child{padding-bottom:0}
.cert-card{position:relative;background:#fff;border:1px solid #e6ebf2;border-radius:12px;box-shadow:0 1px 2px rgba(16,24,40,.05);transition:border-color .15s,box-shadow .22s;overflow:hidden}
.cert-card:hover{border-color:#d8e0ea;box-shadow:0 1px 2px rgba(16,24,40,.04),0 6px 20px -10px rgba(16,24,40,.14)}
.cert-card[data-open="true"]{border-color:#cbdcff;box-shadow:0 1px 2px rgba(16,24,40,.04),0 6px 20px -10px rgba(16,24,40,.14)}
.cert-head{width:100%;display:flex;align-items:center;gap:12px;padding:13px 16px;border:0;background:transparent;cursor:pointer;text-align:left;font-family:inherit}
.cert-titlewrap{flex:1;min-width:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.cert-role{flex:0 0 auto;padding:1.5px 7px;border-radius:5px;font-size:11px;font-weight:500;letter-spacing:.03em;background:#f2f5f9;color:#74839a;border:1px solid #e6ebf2}
.cert.is-ok .cert-role{background:#eef4ff;color:#1d4ed8;border-color:#cbdcff}
.cert-role.root,.cert.is-ok .cert-role.root{background:#e3ebfa;color:#1e40af;border-color:#c3d4f5}
.cert.is-warn .cert-role{background:#fff5e6;color:#a85c07;border-color:#f3d9ae}
.cert.is-bad .cert-role{background:#fef2f1;color:#cf2b1e;border-color:#f5cbc6}
.cert-name{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,'Courier New',monospace;font-size:13.5px;font-weight:600;color:#0f172a;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.cert-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
/* 剩余天数：一律纯文字无底色无边框；≤30 天琥珀、≤7 天/过期红，其余中性灰 */
.days-plain{font-size:12px;font-weight:500;color:#74839a;white-space:nowrap}
.days-plain.is-warn{color:#a85c07}
.days-plain.is-bad{color:#cf2b1e}
.chev{color:#9dabbd;transition:transform .22s;flex:0 0 auto}
.cert-card[data-open="true"] .chev{transform:rotate(180deg);color:#2563eb}
.cert-meta{display:grid;grid-template-columns:1.1fr 1.5fr 1fr;gap:0 20px;padding:0 16px 12px;margin:0}
.cert-meta>div{min-width:0}
.cert-meta dt{font-size:11px;font-weight:540;letter-spacing:.03em;color:#9dabbd;margin-bottom:2px}
.cert-meta dd{font-size:12.5px;color:#44546b;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:0}
.cert-detail{padding:0 16px 16px;border-top:1px dashed #eef2f7;animation:card-slide .22s both}
@keyframes card-slide{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 20px;padding-top:14px;margin:0}
.detail-grid dt{font-size:11px;letter-spacing:.03em;color:#9dabbd;margin-bottom:2px}
.detail-grid dd{font-size:12.5px;color:#44546b;margin:0;word-break:break-all}
.detail-grid dd.mono{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,'Courier New',monospace}
.detail-grid dd.fp{font-size:11.5px;line-height:1.6}
.link-ok{color:#16a34a;font-weight:600}
.link-bad{color:#cf2b1e;font-weight:600}
.san{margin-top:14px;display:flex;gap:10px;align-items:flex-start}
.san-label{flex:0 0 auto;font-size:11px;letter-spacing:.03em;color:#9dabbd;padding-top:4px;width:56px}
.san-list{display:flex;flex-wrap:wrap;gap:6px}
.san-list code{background:#f1f5f9;color:#475569;padding:2px 10px;border-radius:6px;font-size:12px;border:1px solid #dbe2ec;font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,'Courier New',monospace}
.pem{margin-top:14px;border:1px solid #e6ebf2;border-radius:8px;overflow:hidden;background:#f2f5f9}
.pem-head{display:flex;align-items:center;justify-content:space-between;padding:7px 12px;background:#fff;border-bottom:1px solid #eef2f7;font-size:11.5px;font-weight:600;color:#74839a;letter-spacing:.03em}
.pem-copy{border:1px solid #d8e0ea;background:#fff;border-radius:6px;padding:2px 12px;font-size:11px;cursor:pointer;color:#74839a;transition:all .15s;font-family:inherit}
.pem-copy:hover{border-color:#2563eb;color:#2563eb}
.pem pre{margin:0;padding:10px 12px;font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,'Courier New',monospace;font-size:10px;color:#74839a;max-height:120px;overflow:auto;white-space:pre;line-height:1.5}

/* ===== 解析失败卡片 ===== */
.result-card {
    background: #fafcfe;
    border: 1px solid #e6ebf2;
    border-radius: 14px;
    padding: 16px 20px 18px;
    margin-top: 14px;
}

.result-card.error-card { border-left: 4px solid #e54545; }

.result-card h2 {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 14.5px;
    color: #c73a3a;
    margin-bottom: 9px;
    font-weight: 600;
}

.result-card h2 svg { flex-shrink: 0; }

.result-card p {
    color: #c73a3a;
    font-size: 13px;
    word-break: break-all;
}

/* ---- 隐私说明 ---- */
.privacy-note {
    text-align: center;
    font-size: 12px;
    color: #a9b4c4;
    margin-top: 16px;
}

/* ---- 移动端 ---- */
@media (max-width: 640px) {
    body { padding: 72px 14px 40px; }
    /* 图标移到左上角，输入框占满整行 */
    .step { position: relative; }
    .rail { position: absolute; top: 2px; left: 0; }
    .rail .line { display: none; }
    .rail .num { width: 28px; height: 28px; }
    .rail .num svg { width: 14px; height: 14px; }
    .lab { padding-left: 40px; }
    .rail { top: -4px; }
    .text-input { padding-top: 44px; }
    .box.out .text-input { padding-top: 16px; }
    .card { padding: 20px 16px 18px; border-radius: 16px; }
    .head h1 { font-size: 19px; }
    .head p { font-size: 12.5px; }
    .text-input { height: 150px; font-size: 12px; }
    .actions { flex-direction: column; }
    .btn { width: 100%; }
    .detail-grid { grid-template-columns: 1fr; }
    .cert-meta { grid-template-columns: 1fr; gap: 8px 0; }
    .cert-name { white-space: normal; overflow-wrap: anywhere; }
    .cert-meta dd { white-space: normal; overflow-wrap: anywhere; }
    .cert-head { flex-wrap: wrap; }
    .cert-right { margin-left: 26px; }
}

/* ===== AIA 证书链补全 ===== */
.cc-bar { display: flex; align-items: center; gap: 10px; margin: 20px 0 10px; flex-wrap: wrap; }
.cc-btn { border: 1px solid #cbdcff; background: #eef4ff; color: #2563eb; font-size: 13px; font-weight: 600; padding: 7px 16px; border-radius: 8px; cursor: pointer; transition: background .15s; }
.cc-btn:hover { background: #dbeafe; }
.cc-btn[disabled] { opacity: .6; cursor: default; }
.cc-hint { font-size: 12px; color: #94a3b8; }
.cc-status { font-size: 12px; color: #74839a; margin: 0 0 14px; word-break: break-all; }
.cc-status:empty { display: none; }
.cc-status.err { color: #c73a3a; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.cc-status.err > span { word-break: break-all; flex: 1 1 auto; min-width: 0; }
.cc-retry { border: 1px solid #efc4c4; background: #fdeeee; color: #c73a3a; font-size: 12px; font-weight: 600; padding: 3px 12px; border-radius: 6px; cursor: pointer; transition: background .15s; white-space: nowrap; }
.cc-retry:hover { background: #fadfdf; }
.alt-head { display: flex; align-items: center; gap: 8px; margin: 24px 0 14px; padding-top: 16px; border-top: 1px dashed #d8e0ea; font-size: 14px; font-weight: 600; color: #0f172a; flex-wrap: wrap; }
.cc-dl-link { font-size: 12px; color: #2563eb; text-decoration: none; cursor: pointer; margin-left: auto; font-weight: 400; }
.cc-dl-link:hover { text-decoration: underline; }
/* 链标签页：当前输入 / 备选链 #N */
.cc-band { background: #f6f8fb; border-radius: 10px; padding: 10px 14px; display: flex; align-items: center; gap: 10px; margin: 20px 0 12px; flex-wrap: wrap; font-size: 13px; }
.ctab { display: inline-flex; align-items: center; padding: 5px 14px; border-radius: 999px; font-size: 12px; font-weight: 500; color: #64748b; cursor: pointer; white-space: nowrap; transition: background .15s, color .15s; }
.ctab.on { background: #3b82f6; color: #fff; font-weight: 600; }
.ctab:hover:not(.on) { background: rgba(37, 99, 235, .1); color: #2563eb; }
.plus-tag { display: inline-block; font-size: 10px; font-weight: 600; border-radius: 4px; padding: 1px 6px; margin-left: 6px; background: #f1f5f9; color: #64748b; border: 1px solid #dbe2ec; vertical-align: 1px; cursor: default; }
@media (max-width: 640px) { .cc-bar { margin-top: 16px; } }