/* ==========================================================================
   DrumDesk — 全站样式
   设计：深墨蓝框架 + 黄铜强调 + 暖白正文底（浅底利于阅读与广告可见）
   ========================================================================== */

*,
*::before,
*::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --ink: #151a21;
  --ink-2: #1f2731;
  --ink-3: #2b3542;
  --brass: #d99a2b;
  --brass-dk: #a87a17;
  --brass-lt: #f5e5c4;
  --paper: #ffffff;
  --paper-2: #f8f6f2;
  --line: #e6e3dd;
  --line-2: #efece7;
  --text: #1c2128;
  --body: #2c333c;
  --muted: #6d7480;
  --muted-2: #9aa1ac;
  --ad-bg: #f3f1ed;
  --ad-line: #cdc7bc;
  --ok: #1d9e75;
  --warn: #e24b4a;

  --wrap: 1180px;
  --sans: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --serif: ui-serif, Georgia, "Times New Roman", serif;
}

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--brass-dk); }
button { font: inherit; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ============================ 页头 ============================ */
.hdr {
  background: var(--ink);
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid #000;
}
.hdr-in {
  max-width: var(--wrap); margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; gap: 32px;
}
.logo {
  font-size: 19px; font-weight: 700; letter-spacing: -.02em;
  color: #fff; text-decoration: none;
  display: flex; align-items: center; gap: 9px; flex-shrink: 0;
}
.logo-mark {
  width: 27px; height: 27px; border-radius: 7px; background: var(--brass);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.nav { display: flex; gap: 26px; font-size: 14px; }
.nav a { color: #c2cad4; text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: #fff; }
.nav a[aria-current="page"] { color: #fff; font-weight: 600; border-bottom-color: var(--brass); }
.nav a.hl { color: var(--brass); font-weight: 600; }

.hdr-search {
  margin-left: auto; width: 168px; height: 34px; border-radius: 8px;
  background: #252e3a; border: 1px solid #333d4a;
  display: flex; align-items: center; gap: 8px; padding: 0 12px;
  font-size: 13px; color: #79838f; cursor: text;
}
.hdr-search input {
  background: transparent; border: 0; outline: 0; color: #e3e8ee;
  font: inherit; font-size: 13px; width: 100%;
}
.hdr-search input::placeholder { color: #79838f; }

.burger {
  display: none; margin-left: auto; background: transparent; border: 0;
  cursor: pointer; padding: 6px;
}
.burger i { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; }

/* ============================ 广告位 ============================ */
.ad {
  background: var(--ad-bg);
  border: 1px dashed var(--ad-line);
  border-radius: 8px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; color: #a49c8e;
  font-size: 10.5px; letter-spacing: .09em; text-transform: uppercase;
  overflow: hidden;
}
.ad b { font-weight: 600; letter-spacing: .06em; }
.ad em { font-style: normal; font-size: 10px; color: #b8b0a2; letter-spacing: .04em; }

.ad-lb { height: 92px; margin: 0 0 30px; }          /* leaderboard 970x90 */
.ad-art { height: 92px; margin: 30px 0; }           /* in-article 728x90 */
.ad-side { height: 250px; margin: 24px 0; }         /* sidebar 300x250 */
.ad-box { height: 284px; margin: 24px 0; }          /* large rect 336x280 */
.ad-flow { height: 250px; margin: 26px 0; }

/* ============================ 首页 Hero ============================ */
.hero { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.hero-in { max-width: var(--wrap); margin: 0 auto; padding: 60px 24px 56px; }
.eyebrow {
  font-size: 11.5px; letter-spacing: .15em; text-transform: uppercase;
  color: var(--brass-dk); font-weight: 700; margin-bottom: 15px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: 52px; line-height: 1.1; letter-spacing: -.025em; font-weight: 700;
  color: var(--text); margin-bottom: 18px;
}
.hero p { font-size: 17.5px; line-height: 1.6; color: #4d545e; max-width: 640px; }
.hero-cta { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }

/* ============================ 按钮 ============================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--brass); color: #151a21;
  padding: 11px 20px; border-radius: 8px; border: 1px solid var(--brass);
  font-size: 14.5px; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background .14s, border-color .14s;
}
.btn:hover { background: #e3a93c; border-color: #e3a93c; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn.ghost:hover { border-color: #c9c3b8; background: var(--paper-2); }

/* ============================ 区块 ============================ */
.sec { max-width: var(--wrap); margin: 0 auto; padding: 44px 24px; }
.sec-tight { padding-top: 20px; }
.sec-hd { display: flex; align-items: baseline; gap: 16px; margin-bottom: 22px; }
.sec-hd h1, .sec-hd h2 { font-size: 23px; font-weight: 700; letter-spacing: -.015em; color: var(--text); }
.sec-hd .rule { flex: 1; height: 1px; background: var(--line); }
.sec-hd a { font-size: 13.5px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.sec-sub { font-size: 15px; color: var(--muted); margin: -12px 0 22px; max-width: 660px; }

/* ============================ 工具卡 ============================ */
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.tool {
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  display: flex; flex-direction: column; background: var(--paper);
}
.tool-top { background: var(--ink); padding: 22px 24px 20px; display: flex; gap: 15px; align-items: flex-start; }
.tool-title { font-size: 17.5px; font-weight: 600; color: #fff; margin-bottom: 6px; letter-spacing: -.01em; }
.tool-sub { font-size: 13.5px; color: #98a2ae; line-height: 1.5; }
.tool-body { padding: 20px 24px 22px; flex: 1; display: flex; flex-direction: column; }
.tool-feats { font-size: 13.5px; color: #5a626c; line-height: 1.95; margin-bottom: 18px; }
.tool-feats span { color: var(--brass-dk); margin-right: 8px; font-weight: 600; }
.tool-body .btn { align-self: flex-start; margin-top: auto; }

/* ============================ 内容网格 ============================ */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  border: 1px solid var(--line); border-radius: 11px; overflow: hidden;
  display: flex; flex-direction: column; background: var(--paper);
  text-decoration: none; color: inherit;
  transition: border-color .14s;
}
.card:hover { border-color: #c9c3b8; }
.thumb {
  height: 138px; background: var(--ink-2); position: relative;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.thumb .k { font-size: 36px; font-weight: 800; color: #2f3a48; letter-spacing: -.03em; }
.thumb .bar { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--brass); opacity: .85; }
.card-body { padding: 16px 17px 18px; flex: 1; display: flex; flex-direction: column; }
.tag {
  display: inline-block; font-size: 10.5px; letter-spacing: .11em; text-transform: uppercase;
  color: var(--brass-dk); font-weight: 700; margin-bottom: 9px;
}
.card h3 { font-size: 15.5px; line-height: 1.4; font-weight: 600; letter-spacing: -.01em; margin-bottom: 10px; color: var(--text); }
.card .meta { font-size: 12px; color: var(--muted-2); margin-top: auto; }

/* ============================ 面包屑 ============================ */
.crumb { max-width: var(--wrap); margin: 0 auto; padding: 20px 24px 0; font-size: 13px; color: var(--muted-2); }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--brass-dk); }
.crumb span { color: var(--muted); }

/* ============================ 文章布局 ============================ */
.layout {
  max-width: var(--wrap); margin: 0 auto; padding: 20px 24px 56px;
  display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 48px; align-items: start;
}

.a-head { padding-bottom: 24px; margin-bottom: 28px; border-bottom: 1px solid var(--line); }
.a-head h1 {
  font-family: var(--serif);
  font-size: 40px; line-height: 1.18; letter-spacing: -.022em; font-weight: 700;
  color: var(--text); margin-bottom: 18px;
}
.a-meta { display: flex; align-items: center; gap: 12px; font-size: 13.5px; color: var(--muted); }
.avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--brass-lt);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  font-size: 12.5px; font-weight: 700; color: var(--brass-dk);
}
.a-meta b { color: var(--text); font-weight: 600; }

.prose { font-size: 16.5px; line-height: 1.78; color: var(--body); }
.prose > p { margin-bottom: 20px; }
.prose h2 {
  font-size: 24px; font-weight: 700; letter-spacing: -.015em;
  color: var(--text); margin: 40px 0 15px; scroll-margin-top: 80px;
}
.prose h3 { font-size: 18.5px; font-weight: 600; color: var(--text); margin: 30px 0 12px; }
.prose ul, .prose ol { margin: 0 0 20px 24px; }
.prose li { margin-bottom: 10px; }
.prose strong { font-weight: 600; color: var(--text); }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.prose img { border-radius: 10px; margin: 26px 0; border: 1px solid var(--line); }
.lead { font-size: 18.5px; line-height: 1.68; color: #3b434d; }

.callout {
  background: var(--paper-2); border-left: 4px solid var(--brass);
  padding: 18px 22px; border-radius: 0 9px 9px 0; margin: 26px 0;
  font-size: 15.5px; line-height: 1.7; color: #414954;
}
.callout b { color: var(--text); }

.warnbox {
  background: #fdf4f4; border-left: 4px solid var(--warn);
  padding: 16px 20px; border-radius: 0 9px 9px 0; margin: 24px 0;
  font-size: 15px; line-height: 1.7; color: #4a3a3a;
}

/* ============================ 内嵌工具 ============================ */
.inline-tool { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 32px 0; }
.it-head { background: var(--ink); padding: 13px 18px; display: flex; align-items: center; gap: 11px; }
.it-head .lbl { font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--brass); font-weight: 700; }
.it-head .ttl { font-size: 13.5px; color: #fff; font-weight: 600; margin-left: auto; text-decoration: none; }
.it-body { padding: 20px; background: var(--paper-2); }

/* ============================ 侧栏 ============================ */
.side { position: sticky; top: 84px; }
.toc { border: 1px solid var(--line); border-radius: 11px; padding: 18px 20px; margin-bottom: 22px; }
.toc h4 { font-size: 11px; letter-spacing: .13em; text-transform: uppercase; color: var(--muted-2); font-weight: 700; margin-bottom: 13px; }
.toc a {
  display: block; font-size: 13.5px; color: #4b535d; text-decoration: none;
  padding: 7px 0 7px 12px; border-left: 2px solid var(--line-2); line-height: 1.45;
}
.toc a:hover { color: var(--brass-dk); }
.toc a.on { color: var(--brass-dk); font-weight: 600; border-left-color: var(--brass); }

.side-box { border: 1px solid var(--line); border-radius: 11px; padding: 18px 20px; margin-bottom: 22px; }
.side-box h4 { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.side-box p { font-size: 13.5px; color: var(--muted); line-height: 1.6; margin-bottom: 14px; }
.side-box .btn { width: 100%; justify-content: center; font-size: 14px; padding: 10px 16px; }
.side-links a { display: block; font-size: 13.5px; color: #4b535d; text-decoration: none; padding: 5px 0; line-height: 1.5; }
.side-links a:hover { color: var(--brass-dk); }

/* ============================ FAQ ============================ */
.faq { border-top: 1px solid var(--line); margin-top: 42px; padding-top: 30px; }
.faq h2 { font-size: 23px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.faq-item { border-bottom: 1px solid var(--line-2); padding: 16px 0; }
.faq-item .q { font-size: 16px; font-weight: 600; color: var(--text); display: flex; gap: 10px; line-height: 1.5; }
.faq-item .q span { color: var(--brass-dk); flex-shrink: 0; }
.faq-item .a { font-size: 15px; color: var(--muted); line-height: 1.72; padding: 9px 0 0 23px; }

/* ============================ 工具页 ============================ */
.tool-hero { background: var(--ink); color: #fff; }
.tool-hero-in { max-width: var(--wrap); margin: 0 auto; padding: 48px 24px 50px; }
.tool-hero h1 { font-family: var(--serif); font-size: 40px; font-weight: 700; letter-spacing: -.022em; margin-bottom: 14px; }
.tool-hero p { font-size: 16px; color: #9aa4b0; line-height: 1.65; max-width: 620px; }
.badges { display: flex; gap: 9px; margin-top: 22px; flex-wrap: wrap; }
.badge { font-size: 12px; padding: 6px 12px; border-radius: 999px; background: #252e3a; border: 1px solid #333d4a; color: #b6bfca; }
.badge b { color: var(--brass); font-weight: 600; }

.tuner-zone { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.tuner-zone-in { max-width: var(--wrap); margin: 0 auto; padding: 34px 24px; }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 13px; padding: 28px; }
.tuner-grid { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 38px; }

.label-cap { font-size: 11px; letter-spacing: .13em; text-transform: uppercase; color: var(--muted-2); font-weight: 700; margin-bottom: 12px; }

.drum-btn {
  width: 100%; text-align: left; cursor: pointer;
  padding: 13px 15px; border-radius: 10px; background: var(--paper);
  border: 1px solid var(--line); margin-bottom: 9px;
  display: flex; align-items: center; gap: 12px;
  transition: border-color .13s, background .13s;
}
.drum-btn:hover { border-color: #c9c3b8; }
.drum-btn.on { background: var(--ink); border-color: var(--ink); }
.drum-btn .dn { font-size: 14.5px; font-weight: 600; color: var(--text); }
.drum-btn .df { font-size: 12px; color: var(--muted-2); margin-left: auto; }
.drum-btn.on .dn { color: #fff; }
.drum-btn.on .df { color: var(--brass); }
.drum-icon {
  width: 32px; height: 32px; border-radius: 7px; background: var(--paper-2);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.drum-btn.on .drum-icon { background: var(--ink-3); }

.dial-top { display: flex; align-items: baseline; gap: 13px; }
.dial-note { font-size: 42px; font-weight: 700; letter-spacing: -.025em; color: var(--text); line-height: 1; }
.dial-hz { font-size: 16px; color: var(--muted); }
.dial-sub { font-size: 13.5px; color: var(--muted-2); margin: 8px 0 22px; }

.head-stage { display: flex; justify-content: center; margin-bottom: 20px; }

.lug-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.lug {
  cursor: pointer; width: 58px; padding: 11px 0; border-radius: 9px;
  background: var(--paper); border: 1px solid var(--line);
  font-size: 12.5px; font-weight: 600; color: var(--text);
  transition: border-color .13s, background .13s, color .13s;
}
.lug:hover { border-color: var(--brass); }
.lug.on { background: var(--brass); border-color: var(--brass); color: #151a21; }
.lug.done { background: var(--paper-2); border-color: var(--ok); color: var(--ok); }

.hint { text-align: center; font-size: 13px; color: var(--muted-2); margin-top: 16px; }
.hint b { color: var(--text); }

/* 双面头切换（batter / resonant） */
.head-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.head-tabs button {
  flex: 1; cursor: pointer; padding: 10px 12px; border-radius: 9px;
  background: var(--paper); border: 1px solid var(--line);
  font-size: 13.5px; font-weight: 600; color: var(--text);
  transition: border-color .13s, background .13s, color .13s;
}
.head-tabs button:hover { border-color: var(--brass); }
.head-tabs button.on { background: var(--ink); border-color: var(--ink); color: #fff; }

.ctrl-row { display: flex; align-items: center; gap: 14px; margin-top: 22px; flex-wrap: wrap; }
.ctrl-row label { font-size: 13.5px; color: var(--muted); }
input[type="range"] { accent-color: var(--brass); }
select, input[type="number"] {
  font: inherit; font-size: 14px; padding: 8px 11px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--paper);
  color: var(--text); outline: 0;
}
select:focus, input[type="number"]:focus { border-color: var(--brass); }

.btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 8px; }
.btn-ink { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-ink:hover { background: var(--ink-3); border-color: var(--ink-3); }

/* 节拍器可视化 */
.beat-row { display: flex; gap: 8px; margin: 18px 0 4px; flex-wrap: wrap; }
.beat-dot {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--paper); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 11.5px; color: var(--muted-2); font-weight: 600;
}
.beat-dot.on { background: var(--brass); border-color: var(--brass); color: #151a21; }
.beat-dot.acc { border-color: var(--brass-dk); color: var(--brass-dk); }

/* sticking 谱 */
.stick-out {
  display: flex; gap: 7px; flex-wrap: wrap; margin: 16px 0;
  min-height: 54px; align-items: center;
}
.step {
  width: 40px; height: 46px; border-radius: 8px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  border: 1px solid var(--line); background: var(--paper);
  font-size: 15px; font-weight: 700; color: var(--text);
  transition: background .08s, border-color .08s;
}
.step small { font-size: 8.5px; font-weight: 600; letter-spacing: .04em; color: var(--muted-2); margin-top: 1px; }
.step.play { background: var(--brass); border-color: var(--brass); color: #151a21; }
.step.play small { color: #5c4308; }

/* ============================ 导购：优缺点对照 ============================ */
.pc { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 16px 0 10px; }
.pc > div { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; background: var(--paper); }
.pc h5 { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 9px; font-weight: 700; color: var(--muted-2); }
.pc .pro h5 { color: var(--ok); }
.pc .con h5 { color: var(--warn); }
.pc ul { margin: 0 0 0 18px; font-size: 14.5px; }
.pc li { margin-bottom: 6px; line-height: 1.55; color: var(--body); }

.pick {
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 26px 0;
}
.pick-hd { background: var(--ink); padding: 13px 20px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pick-hd .rk { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; color: var(--brass); }
.pick-hd .nm { font-size: 16px; font-weight: 600; color: #fff; }
.pick-hd .pr { font-size: 13px; color: #9aa4b0; margin-left: auto; }
.pick-bd { padding: 18px 20px 20px; }
.pick-bd p { font-size: 15.5px; line-height: 1.72; color: var(--body); margin-bottom: 12px; }
.pick-bd .verdict { font-size: 15px; color: var(--text); background: var(--paper-2); border-left: 3px solid var(--brass); padding: 11px 15px; border-radius: 0 8px 8px 0; }

@media (max-width: 760px) { .pc { grid-template-columns: 1fr; } }

/* ============================ 页脚 ============================ */
.ftr { background: var(--ink); color: #8b95a1; padding: 44px 0 32px; }
.ftr-in { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.ftr-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr; gap: 34px; margin-bottom: 30px; }
.ftr h5 { font-size: 11px; letter-spacing: .13em; text-transform: uppercase; color: #fff; font-weight: 700; margin-bottom: 14px; }
.ftr a { display: block; color: #8b95a1; text-decoration: none; font-size: 13.5px; padding: 5px 0; }
.ftr a:hover { color: #fff; }
.ftr .about { font-size: 13.5px; line-height: 1.7; max-width: 300px; margin-top: 12px; }
.ftr-logo { font-size: 17px; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 9px; }
.ftr-bot {
  border-top: 1px solid var(--ink-3); padding-top: 20px;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px;
}

/* ============================ 通用页 / 法务页 ============================ */
.page { max-width: 780px; margin: 0 auto; padding: 44px 24px 64px; }
.page h1 { font-family: var(--serif); font-size: 38px; font-weight: 700; letter-spacing: -.022em; color: var(--text); margin-bottom: 14px; }
.page .updated { font-size: 13.5px; color: var(--muted-2); margin-bottom: 30px; }
.page h2 { font-size: 21px; font-weight: 700; color: var(--text); margin: 32px 0 12px; }
.page p { margin-bottom: 16px; font-size: 16px; line-height: 1.75; }
.page ul { margin: 0 0 18px 24px; }
.page li { margin-bottom: 9px; line-height: 1.7; }
.page code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px; background: var(--paper-2); border: 1px solid var(--line);
  padding: 1px 6px; border-radius: 5px;
}

/* 移动端底栏 */
.mnav {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: var(--paper); border-top: 1px solid var(--line);
  grid-template-columns: repeat(5, 1fr);
}
.mnav a {
  text-align: center; padding: 9px 0 11px; font-size: 10.5px;
  color: var(--muted-2); text-decoration: none;
}
.mnav a[aria-current="page"] { color: var(--brass-dk); font-weight: 700; }
.mnav svg { margin: 0 auto 3px; }

/* 移动端抽屉菜单（汉堡键） */
.mdrawer { display: none; background: var(--ink-2); border-bottom: 1px solid #000; }
.mdrawer.open { display: block; }
.mdrawer a {
  display: block; padding: 13px 24px; color: #c2cad4; text-decoration: none;
  font-size: 15px; border-bottom: 1px solid #252e3a;
}
.mdrawer a:hover, .mdrawer a:active { background: var(--ink-3); color: #fff; }
.mdrawer a[aria-current="page"] { color: var(--brass); font-weight: 600; }
@media (min-width: 761px) { .mdrawer { display: none !important; } }

/* ============================ 响应式 ============================ */
@media (max-width: 1000px) {
  .layout, .tool-content-grid { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; }
  .grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav, .hdr-search { display: none; }
  .burger { display: block; }
  .hdr-in { height: 58px; }

  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
  .hero-in { padding: 40px 20px 38px; }

  .a-head h1 { font-size: 29px; }
  .tool-hero h1 { font-size: 29px; }
  .page h1 { font-size: 29px; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 21px; }
  .lead { font-size: 17px; }

  .tools, .grid { grid-template-columns: 1fr; }
  .tuner-grid { grid-template-columns: 1fr; gap: 26px; }
  .ftr-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  .wrap, .sec, .layout, .page, .tool-hero-in, .tuner-zone-in, .ftr-in, .crumb { padding-left: 18px; padding-right: 18px; }
  .panel { padding: 20px; }
  .lug { width: 48px; padding: 10px 0; }
  .ad-lb, .ad-art { height: 76px; }
  .mnav { display: grid; }
  body { padding-bottom: 58px; }
}

@media (max-width: 420px) {
  .ftr-grid { grid-template-columns: 1fr; }
  .dial-note { font-size: 34px; }
}

/* 打印 */
@media print {
  .hdr, .ftr, .side, .mnav, .ad { display: none !important; }
}