/* =====================================================================
 * 44 · SQL 慢查询怎么优化 —— 独立设计
 * 视觉原型：IDE 工作台（深色代码面板 + 右侧诊断清单）+ 下方两张对照表。
 * 与 41/42/43 均不同：代码面板在浅色主题下也保持深色，像真正的编辑器。
 * ===================================================================== */
.p44 {
    --g5c-bg: #f6f5fb;
    --g5c-bg2: #ebe9f7;
    --g5c-surface: #ffffff;
    --g5c-surface2: #f8f7fd;
    --g5c-ink: #201d33;
    --g5c-ink2: #55506d;
    --g5c-muted: #8b86a5;
    --g5c-line: #e2dff0;
    --g5c-line2: #cbc5e4;
    --g5c-accent: #6045d6;
    --g5c-accent2: #0d7f87;
    --g5c-on: #ffffff;
    --g5d-bg: #12111c;
    --g5d-bg2: #1b192b;
    --g5d-surface: #1a1829;
    --g5d-surface2: #221f34;
    --g5d-ink: #eeeaf9;
    --g5d-ink2: #bdb6d6;
    --g5d-muted: #867fa5;
    --g5d-line: #302c47;
    --g5d-line2: #413b60;
    --g5d-accent: #a692ff;
    --g5d-accent2: #5ecccf;
    --g5d-on: #12111c;
    --g5-h: "Inter", "HarmonyOS Sans SC", "PingFang SC", system-ui, sans-serif;
    --g5-body: 14.6px;
    --g5-lh: 1.82;
    --g5-r: 12px;
    --sql-code-bg: #1b2030;
    --sql-code-line: #2a3247;
    --sql-code-ink: #dfe7f7;
}
:root[data-theme="dark"] .p44 { --sql-code-bg: #10141f; --sql-code-line: #232b3b; --sql-code-ink: #d5ddef; }

/* ---------- 首屏 ---------- */
.sio-hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 30px; padding: 12px 0 30px; }
.sio-kicker { font-family: var(--g5-m); font-size: 10.8px; font-weight: 700; letter-spacing: .16em; color: var(--g5-accent); margin-bottom: 18px; }
.sio-hero h1 { font-size: clamp(2.25rem, 4.5vw, 3.4rem); line-height: 1.16; letter-spacing: -.04em; margin: 0 0 17px; }
.sio-hero h1 em { font-style: normal; color: var(--g5-accent); }
.sio-lede { max-width: 640px; font-size: 15.6px; line-height: 1.92; color: var(--g5-ink2); margin-bottom: 18px; }
.sio-lede b { color: var(--g5-ink); }
.sio-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.sio-radar {
    background: var(--g5-surface); border: 1px solid var(--g5-line);
    border-radius: var(--g5-r); padding: 17px 18px; box-shadow: var(--g5-shadow);
}
.sio-radar-hd { display: flex; align-items: baseline; justify-content: space-between; padding-bottom: 11px; border-bottom: 1px solid var(--g5-line); }
.sio-radar-hd b { font-size: 14px; }
.sio-radar-hd span { font-family: var(--g5-m); font-size: 11px; color: var(--g5-muted); }
.sio-radar ul { list-style: none; padding: 0; margin: 13px 0; display: grid; gap: 8px; }
.sio-radar li { display: flex; align-items: center; gap: 9px; font-size: 12.2px; color: var(--g5-ink2); }
.sio-radar li i { font-family: var(--g5-m); font-style: normal; font-size: 10px; font-weight: 700; color: var(--g5-accent); background: var(--g5-bg2); padding: 2px 5px; border-radius: 4px; }
.sio-radar li code { font-size: 10.6px; background: var(--g5-bg2); }
.sio-radar p { margin: 0; font-size: 11.8px; line-height: 1.8; color: var(--g5-muted); border-top: 1px dashed var(--g5-line); padding-top: 11px; }

/* ---------- IDE 双栏 ---------- */
.sio-ide { display: grid; grid-template-columns: 1.08fr .92fr; gap: 18px; align-items: stretch; }
.sio-editor, .sio-diagnose {
    background: var(--g5-surface); border: 1px solid var(--g5-line);
    border-radius: var(--g5-r); box-shadow: var(--g5-shadow); overflow: hidden;
    display: flex; flex-direction: column;
}
.sio-editor-hd {
    display: flex; align-items: center; gap: 11px; padding: 10px 14px;
    border-bottom: 1px solid var(--g5-line); background: var(--g5-surface2);
}
.sio-dots { display: flex; gap: 5px; }
.sio-dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--g5-line2); }
.sio-dots i:first-child { background: #e0897f; }
.sio-dots i:nth-child(2) { background: #e3bf73; }
.sio-dots i:nth-child(3) { background: #83c39a; }
.sio-editor-hd b { font-family: var(--g5-m); font-size: 12px; }
.sio-editor-hd > span:not(.sio-dots) { font-family: var(--g5-m); font-size: 10.5px; color: var(--g5-muted); }
.sio-editor-btns { margin-left: auto; display: flex; gap: 6px; }
.sio-code { display: flex; flex: 1; background: var(--sql-code-bg); min-height: 300px; }
.sio-gutter {
    flex: none; width: 42px; padding: 14px 8px; text-align: right;
    font-family: var(--g5-m); font-size: 12px; line-height: 1.7;
    color: #64708a; background: rgba(0, 0, 0, .14);
    border-right: 1px solid var(--sql-code-line); white-space: pre; overflow: hidden;
}
.p44 .sio-code textarea,
:root[data-theme="dark"] .p44 .sio-code textarea {
    flex: 1; min-width: 0; border: 0 !important; border-radius: 0;
    background: transparent !important; color: var(--sql-code-ink) !important;
    box-shadow: none !important; padding: 14px 16px;
    font-family: var(--g5-m); font-size: 12.6px; line-height: 1.7;
    resize: vertical; white-space: pre; overflow: auto;
}
.p44 .sio-code textarea:focus { box-shadow: none !important; }
.p44 .sio-code textarea::placeholder { color: #5f6b84; }
.sio-editor-ft { display: flex; align-items: end; gap: 12px; padding: 12px 14px; border-top: 1px solid var(--g5-line); flex-wrap: wrap; }
.sio-inline { flex: 1; min-width: 220px; }
.sio-inline span { display: block; font-size: 11.5px; font-weight: 700; color: var(--g5-ink2); margin-bottom: 5px; }
.sio-inline input { font-family: var(--g5-m); font-size: 12px; }
.sio-editor-ft .g5-btn { flex: none; }
.sio-msg { margin: 0 14px 12px; padding: 8px 12px; border-radius: 7px; background: var(--g5-okbg); color: var(--g5-ok); font-size: 12.3px; }
.sio-msg.is-err { background: var(--g5-badbg); color: var(--g5-bad); }

.sio-diagnose-hd { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; border-bottom: 1px solid var(--g5-line); background: var(--g5-surface2); }
.sio-diagnose-hd b { font-size: 14px; }
.sio-diagnose-hd span { font-family: var(--g5-m); font-size: 11px; color: var(--g5-muted); }
.sio-hits { padding: 14px 16px; overflow-y: auto; max-height: 470px; flex: 1; }
.sio-placeholder { font-size: 12.8px; line-height: 1.9; color: var(--g5-muted); margin: 0; }
.sio-hit {
    border: 1px solid var(--g5-line); border-left: 3px solid var(--g5-info);
    border-radius: 0 9px 9px 0; padding: 11px 13px; margin-bottom: 11px; background: var(--g5-surface2);
}
.sio-hit.is-high { border-left-color: var(--g5-bad); }
.sio-hit.is-mid { border-left-color: var(--g5-warn); }
.sio-hit.is-low { border-left-color: var(--g5-info); }
.sio-hit-hd { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; flex-wrap: wrap; }
.sio-hit-hd b { font-size: 12.8px; }
.sio-hit-hd .sio-rid { font-family: var(--g5-m); font-size: 10px; color: var(--g5-muted); }
.sio-hit code { display: block; font-size: 11.4px; background: var(--g5-bg2); padding: 5px 8px; border-radius: 5px; margin: 7px 0; word-break: break-all; white-space: pre-wrap; }
.sio-hit p { margin: 0; font-size: 12.2px; line-height: 1.82; color: var(--g5-ink2); }
.sio-hit .sio-fix { margin-top: 7px; color: var(--g5-ok); }
.sio-ok-box { padding: 13px; border-radius: 9px; background: var(--g5-okbg); color: var(--g5-ok); font-size: 12.6px; line-height: 1.8; }

/* ---------- 章节通用 ---------- */
.sio-prefix, .sio-explain, .sio-batch, .sio-ai {
    margin-top: 26px; padding: 20px 22px 22px;
    background: var(--g5-surface); border: 1px solid var(--g5-line);
    border-radius: var(--g5-r); box-shadow: var(--g5-shadow);
}
.sio-sec-hd { display: flex; align-items: center; gap: 11px; padding-bottom: 12px; border-bottom: 1px solid var(--g5-line); margin-bottom: 15px; }
.sio-sec-hd > i { font-family: var(--g5-m); font-style: normal; font-size: 10.5px; font-weight: 700; color: var(--g5-accent); background: var(--g5-bg2); padding: 3px 7px; border-radius: 5px; }
.sio-sec-hd h2 { font-size: 17px; }
.sio-sec-hd > span { margin-left: auto; font-size: 11.8px; color: var(--g5-muted); }
.sio-prefix-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.sio-prefix-fields { display: grid; gap: 11px; align-content: start; }
.sio-prefix-fields label > span { display: block; font-size: 11.8px; font-weight: 700; color: var(--g5-ink2); margin-bottom: 5px; }
.sio-prefix-fields input { font-family: var(--g5-m); font-size: 12.4px; }
.sio-prefix-fields .g5-btn { justify-self: start; }
.sio-prefix-out { border: 1px dashed var(--g5-line2); border-radius: 9px; padding: 16px; background: var(--g5-surface2); min-height: 150px; }
.sio-prefix-out h3 { font-size: 15px; margin-bottom: 10px; }
.sio-prefix-out .sio-chain { display: flex; flex-wrap: wrap; gap: 7px; margin: 12px 0; }
.sio-prefix-out .sio-col {
    font-family: var(--g5-m); font-size: 11.8px; font-weight: 700; padding: 5px 10px;
    border-radius: 6px; border: 1px solid var(--g5-line2); background: var(--g5-surface); color: var(--g5-ink2);
}
.sio-prefix-out .sio-col.is-used { background: var(--g5-okbg); color: var(--g5-ok); border-color: transparent; }
.sio-prefix-out .sio-col.is-stop { background: var(--g5-warnbg); color: var(--g5-warn); border-color: transparent; }
.sio-prefix-out p { font-size: 12.4px; line-height: 1.85; color: var(--g5-ink2); margin: 8px 0 0; }

.sio-table { width: 100%; min-width: 640px; font-size: 12.8px; }
.sio-table th { text-align: left; padding: 10px; font-size: 11.3px; color: var(--g5-muted); border-bottom: 1px solid var(--g5-line2); }
.sio-table td { padding: 11px 10px; border-bottom: 1px solid var(--g5-line); color: var(--g5-ink2); line-height: 1.8; vertical-align: top; }
.sio-table tr:last-child td { border-bottom: 0; }
.sio-table td:first-child { white-space: nowrap; }
.sio-note { margin: 14px 0 0; font-size: 12.2px; color: var(--g5-muted); line-height: 1.8; }

.sio-batch textarea { font-family: var(--g5-m); font-size: 12.3px; line-height: 1.75; }
.sio-clean { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 12px; padding: 11px; border: 1px dashed var(--g5-line2); border-radius: 9px; background: var(--g5-surface2); }
.sio-clean > b { font-size: 11.8px; color: var(--g5-ink2); }
.g5-check { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border: 1px solid var(--g5-line); border-radius: 6px; background: var(--g5-surface); color: var(--g5-ink2); font-size: 11.4px; font-weight: 650; cursor: pointer; user-select: none; }
.g5-check input { width: 14px; height: 14px; margin: 0; }
.g5-check.is-on { border-color: var(--g5-accent); color: var(--g5-accent); background: var(--g5-bg2); }
#sioPreview { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 10.8px; }
.sio-table-sm { margin-top: 16px; min-width: 560px; }
.sio-err { margin-top: 12px; padding: 9px 12px; border-radius: 7px; background: var(--g5-badbg); color: var(--g5-bad); font-size: 12.4px; }
.sio-ai { border-left: 3px solid var(--g5-accent2); }
.sio-ai-lead { font-size: 13px; line-height: 1.9; color: var(--g5-ink2); margin: 14px 0 16px; }

.sio-read { margin-top: 40px; padding: 26px 30px 8px; border-top: 2px solid var(--g5-ink); }
.sio-read h2 { font-size: 21px; margin-bottom: 16px; }
.sio-read p { font-size: 14.1px; line-height: 2.05; color: var(--g5-ink2); margin-bottom: 15px; }
.sio-read b { color: var(--g5-accent); }

@media (max-width: 980px) {
    .sio-hero, .sio-ide, .sio-prefix-grid { grid-template-columns: 1fr; }
    .sio-hits { max-height: none; }
}
@media (max-width: 620px) {
    .sio-prefix, .sio-explain, .sio-batch, .sio-ai { padding: 16px 14px 18px; }
    .sio-read { padding: 22px 16px 6px; }
    .sio-editor-ft { flex-direction: column; align-items: stretch; }
}