/* ============ 操作指引（分步向导） ============
   全部选择器收敛在 .guide-page 下，避免和站点的 .hero/.brand/.tip/.card 撞车。
   配色接到 style.css 的变量上，跟资料中心保持一致。 */

.guide-page {
  --g-ink: #1a1a1a;
  --g-muted: var(--c-text-soft);
  --g-green: var(--c-primary);
  --g-green-dark: var(--c-primary-dark);
  --g-pale: var(--c-tint);
  --g-line: var(--c-border);
  --g-soft: var(--c-subtle);

  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px 120px;
  color: var(--c-text);
}
.guide-page * { box-sizing: border-box; }
.guide-page button { font: inherit; -webkit-tap-highlight-color: transparent; }

/* ---------- 顶部 ---------- */
.guide-hero { padding: 48px 20px 26px; text-align: center; }
.guide-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--g-green); background: var(--g-pale); border: 1px solid var(--c-tint-border);
  border-radius: 999px; padding: 6px 13px; font-size: 12px; font-weight: 600; letter-spacing: .03em;
}
.guide-eyebrow span { width: 7px; height: 7px; background: var(--c-brand); border-radius: 50%; }
.guide-hero h1 { margin: 18px 0 10px; font-size: clamp(28px, 6vw, 42px); letter-spacing: -.045em; line-height: 1.15; font-weight: 700; }
.guide-hero > p { color: var(--g-muted); line-height: 1.75; font-size: 15px; max-width: 520px; margin: 0 auto; }
.guide-status {
  margin: 22px auto 0; width: fit-content; background: #fff;
  border: 1px solid var(--g-line); border-radius: 10px; padding: 8px 14px;
  display: flex; align-items: center; gap: 8px; color: var(--g-muted); font-size: 12.5px;
}
.guide-status strong { color: var(--c-text); margin-left: 4px; font-variant-numeric: tabular-nums; }
.guide-status .status-dot { width: 7px; height: 7px; background: var(--c-brand); border-radius: 50%; }
.share-btn {
  margin-top: 14px; border: 1px solid var(--g-line); background: #fff; color: var(--c-text-soft);
  border-radius: 6px; padding: 6px 14px; font-size: 12.5px; cursor: pointer; transition: border-color .15s, color .15s;
}
.share-btn:hover { border-color: var(--c-text); color: var(--c-text); }

/* ---------- 步骤条 ---------- */
.guide-stepper {
  max-width: 860px; margin: 0 auto; padding: 22px 24px 20px;
  display: grid; grid-template-columns: repeat(7, 1fr); position: relative;
}
.guide-stepper button {
  position: relative; z-index: 2; border: 0; background: transparent; padding: 0;
  display: grid; justify-items: center; gap: 8px; color: var(--c-text-mute); cursor: pointer;
}
.guide-stepper .step-number {
  width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--c-border-strong);
  background: #fff; display: grid; place-items: center; font-size: 12px; font-weight: 600; transition: .2s ease;
}
.guide-stepper .step-label { font-size: 11.5px; font-weight: 500; white-space: nowrap; }
.guide-stepper button.active { color: var(--g-green); }
.guide-stepper button.active .step-number { color: #fff; background: var(--g-green); border-color: var(--g-green); }
.guide-stepper button.done { color: var(--g-green); }
.guide-stepper button.done .step-number { color: var(--g-green); background: var(--g-pale); border-color: var(--c-tint-border); }
.guide-stepper .step-line {
  position: absolute; z-index: 1; top: 38px;
  left: calc(7.142% + 16px); right: calc(7.142% + 16px);
  height: 1px; background: var(--c-border-strong);
}
.guide-stepper .step-line i { display: block; height: 100%; background: var(--g-green); transition: width .3s ease; }

/* ---------- 内容卡 ---------- */
.guide-shell {
  width: min(100%, 760px); margin: 0 auto; background: #fff;
  border: 1px solid var(--g-line); border-radius: var(--radius); padding: 28px 30px; min-height: 480px;
}
.guide-shell .step-heading { border-bottom: 1px solid var(--g-line); padding-bottom: 18px; margin-bottom: 22px; }
.guide-shell .step-heading > span { font-size: 12px; color: var(--g-green); font-weight: 600; letter-spacing: .06em; }
.guide-shell .step-heading h2 { margin: 7px 0 0; font-size: clamp(20px, 4vw, 26px); letter-spacing: -.03em; line-height: 1.3; font-weight: 650; }
.guide-page .step-content { animation: guideEnter .28s ease both; }
@keyframes guideEnter { from { opacity: 0; transform: translateY(6px); } }

/* ---------- 步骤 1：连线示意 ---------- */
.guide-page .connection-visual {
  display: grid; grid-template-columns: 1fr 1.1fr 1fr; align-items: center; gap: 8px;
  padding: 34px 20px 26px; border-radius: var(--radius); background: var(--g-soft); border: 1px solid var(--g-line);
}
.guide-page .device-card { display: grid; justify-items: center; position: relative; z-index: 2; }
.guide-page .device-card > p { font-size: 12px; color: var(--g-muted); font-weight: 500; margin: 12px 0 0; }
.guide-page .laptop-screen {
  width: 96px; height: 62px; border: 5px solid var(--g-ink); border-radius: 7px 7px 3px 3px;
  background: var(--c-brand); display: grid; place-items: center;
  color: #fff; font-size: 10px; font-weight: 700; letter-spacing: .08em;
}
.guide-page .laptop-base { width: 115px; height: 8px; background: #d4d4d4; border-radius: 2px 2px 7px 7px; }
.guide-page .imu-body {
  width: 76px; height: 88px; border-radius: 14px; background: var(--g-ink); color: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative;
}
.guide-page .imu-body strong { font-size: 15px; letter-spacing: .1em; }
.guide-page .imu-body small { font-size: 8px; color: #a3a3a3; margin-top: 5px; }
.guide-page .imu-light { position: absolute; top: 10px; right: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-brand); }
.guide-page .cable { position: relative; height: 70px; display: flex; align-items: center; }
.guide-page .cable b { width: 100%; height: 2px; background: var(--c-border-strong); display: block; }
.guide-page .cable > span {
  position: absolute; left: 50%; top: 6px; transform: translateX(-50%);
  color: var(--g-green); background: #fff; border: 1px solid var(--c-tint-border);
  border-radius: 999px; padding: 3px 9px; font-size: 9.5px; font-weight: 600;
}
.guide-page .plug { width: 11px; height: 15px; background: #a3a3a3; border-radius: 2px; flex: 0 0 auto; }

.guide-page .checklist { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 16px; }
.guide-page .checklist > div { border: 1px solid var(--g-line); border-radius: var(--radius-sm); padding: 14px; display: flex; gap: 11px; }
.guide-page .checklist > div > span {
  flex: 0 0 auto; width: 24px; height: 24px; border-radius: 6px; background: var(--g-pale);
  color: var(--g-green); display: grid; place-items: center; font-size: 11px; font-weight: 600;
}
.guide-page .checklist p { margin: 1px 0 0; display: flex; flex-direction: column; gap: 4px; }
.guide-page .checklist strong { font-size: 13px; font-weight: 600; }
.guide-page .checklist small { font-size: 11.5px; color: var(--g-muted); line-height: 1.6; }
.guide-page .tip {
  margin-top: 16px; padding: 12px 15px; background: #fffbeb; color: #854d0e;
  border: 1px solid #fde68a; border-radius: var(--radius-sm); font-size: 12.5px; line-height: 1.65;
}
.guide-page .tip b { margin-right: 8px; }

/* ---------- 步骤 2 ---------- */
.guide-page .path-card { display: flex; align-items: center; gap: 13px; padding: 14px; border: 1px solid var(--g-line); border-radius: var(--radius-sm); }
.guide-page .app-icon-img { width: 46px; height: 46px; flex: 0 0 auto; display: block; }
.guide-page .path-card > div:nth-child(2) { display: flex; flex-direction: column; gap: 3px; }
.guide-page .path-card strong { font-size: 14px; font-weight: 600; }
.guide-page .path-card small { color: var(--g-muted); font-size: 11.5px; }
.guide-page .open-badge { margin-left: auto; color: var(--g-green); background: var(--g-pale); padding: 5px 10px; border-radius: 6px; font-size: 11px; font-weight: 600; }
.guide-page .action-route { display: flex; align-items: center; justify-content: center; gap: 8px; margin: 18px 0; color: var(--g-muted); font-size: 12.5px; flex-wrap: wrap; }
.guide-page .action-route span, .guide-page .action-route strong { background: var(--g-soft); border: 1px solid var(--g-line); border-radius: 6px; padding: 6px 10px; }
.guide-page .action-route strong { color: var(--g-green); background: var(--g-pale); border-color: var(--c-tint-border); font-weight: 600; }
.guide-page .action-route i { font-style: normal; font-size: 18px; color: var(--c-text-mute); }

.guide-page .screen-frame { border: 1px solid var(--g-line); border-radius: var(--radius-sm); overflow: hidden; background: var(--g-soft); }
.guide-page .screen-frame.compact { margin-top: 8px; }
.guide-page .screen-frame img { display: block; width: 100%; height: auto; }
.guide-page .window-bar { display: flex; align-items: center; gap: 5px; height: 26px; background: #f4f4f5; padding: 0 9px; border-bottom: 1px solid var(--g-line); }
.guide-page .window-bar i { width: 6px; height: 6px; border-radius: 50%; background: #d4d4d4; }
.guide-page .window-bar span { font-size: 9.5px; color: var(--c-text-mute); margin-left: 4px; }
.guide-page .caption { color: var(--g-muted); font-size: 12px; line-height: 1.6; text-align: center; margin-top: 10px; }

/* ---------- 步骤 3 ---------- */
.guide-page .substep + .substep { border-top: 1px solid var(--g-line); margin-top: 28px; padding-top: 28px; }
.guide-page .substep-title { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 15px; }
.guide-page .substep-title > span { padding: 5px 8px; background: var(--g-ink); color: #fff; border-radius: 5px; font-size: 11px; font-weight: 600; }
.guide-page .substep-title > div { display: flex; flex-direction: column; gap: 4px; }
.guide-page .substep-title strong { font-size: 15px; font-weight: 600; }
.guide-page .substep-title small { color: var(--g-muted); font-size: 11.5px; }
.guide-page .parameter-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin-bottom: 14px; }
.guide-page .parameter-grid > div { background: var(--g-soft); border: 1px solid var(--g-line); border-radius: var(--radius-sm); padding: 10px; display: flex; flex-direction: column; gap: 5px; }
.guide-page .parameter-grid span { color: var(--g-muted); font-size: 10.5px; }
.guide-page .parameter-grid strong { font-size: 11.5px; font-weight: 600; }

.guide-page .mode-list { display: grid; gap: 9px; }
.guide-page .mode-list button {
  width: 100%; text-align: left; border: 1px solid var(--g-line); border-radius: var(--radius-sm);
  background: #fff; padding: 13px; display: flex; align-items: flex-start; gap: 11px; cursor: pointer;
  color: var(--c-text); transition: .18s ease;
}
.guide-page .mode-list button:hover { border-color: var(--c-border-strong); }
.guide-page .mode-list button.selected { border-color: var(--g-green); background: var(--g-pale); }
.guide-page .radio { flex: 0 0 auto; width: 18px; height: 18px; border: 2px solid var(--c-border-strong); border-radius: 50%; margin-top: 2px; display: grid; place-items: center; }
.guide-page .selected .radio { border-color: var(--g-green); }
.guide-page .selected .radio i { width: 9px; height: 9px; background: var(--g-green); border-radius: 50%; }
.guide-page .mode-copy { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.guide-page .mode-copy strong { font-size: 13.5px; font-weight: 600; }
.guide-page .mode-copy small { color: var(--g-muted); font-size: 11.5px; line-height: 1.6; }
.guide-page .mode-list em { font-style: normal; color: var(--g-green); background: #fff; border: 1px solid var(--c-tint-border); padding: 3px 8px; border-radius: 999px; font-size: 10px; font-weight: 600; white-space: nowrap; }
.guide-page .mode-detail { margin: 12px 0 15px; border-left: 2px solid var(--c-brand); background: var(--g-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 13px 15px; }
.guide-page .mode-detail > strong { display: block; font-size: 12.5px; margin-bottom: 8px; font-weight: 600; }
.guide-page .mode-detail > div { display: grid; grid-template-columns: 110px 1fr; font-size: 11.5px; padding: 6px 0; border-top: 1px solid var(--g-line); }
.guide-page .mode-detail p { margin: 0; color: var(--g-muted); line-height: 1.6; }
.guide-page .mode-detail.single p { font-size: 12px; }

/* ---------- 步骤 4 ---------- */
.guide-page .success-card { display: flex; gap: 13px; padding: 16px; border-radius: var(--radius); background: var(--g-pale); border: 1px solid var(--c-tint-border); }
.guide-page .success-icon { width: 34px; height: 34px; flex: 0 0 auto; border-radius: 50%; background: var(--g-green); color: #fff; display: grid; place-items: center; font-weight: 700; }
.guide-page .success-card strong { font-size: 14px; font-weight: 600; }
.guide-page .success-card p { color: var(--g-muted); margin: 5px 0 0; font-size: 12px; line-height: 1.65; }
.guide-page .notice-list { display: grid; gap: 10px; margin-top: 15px; }
.guide-page .notice-list article { display: flex; gap: 13px; padding: 16px; border: 1px solid var(--g-line); border-radius: var(--radius-sm); }
.guide-page .notice-list article > span { color: var(--c-text-mute); font-size: 11px; font-weight: 600; letter-spacing: .06em; }
.guide-page .notice-list h3 { margin: 0 0 6px; font-size: 14px; font-weight: 600; }
.guide-page .notice-list p { color: var(--g-muted); margin: 0; font-size: 12px; line-height: 1.8; }
.guide-page .notice-list a { display: inline-flex; gap: 5px; align-items: center; margin-top: 10px; text-decoration: none; color: #fff; background: var(--g-green); border-radius: 6px; padding: 7px 12px; font-size: 11.5px; font-weight: 500; }
.guide-page .notice-list a:hover { background: var(--g-green-dark); color: #fff; }
.guide-page .notice-list small { display: block; color: var(--c-text-mute); margin-top: 8px; font-size: 11px; }
.guide-page .notice-list ul { margin: 8px 0 0; padding-left: 18px; color: var(--g-muted); display: grid; grid-template-columns: 1fr 1fr; gap: 5px 18px; font-size: 11.5px; line-height: 1.6; }
.guide-page .done-banner { margin-top: 15px; background: var(--g-ink); color: #fff; border-radius: var(--radius); padding: 16px; display: flex; gap: 12px; }
.guide-page .done-banner > span { width: 26px; height: 26px; flex: 0 0 auto; background: var(--c-brand); color: var(--g-ink); border-radius: 6px; display: grid; place-items: center; font-weight: 700; }
.guide-page .done-banner strong { font-size: 13.5px; font-weight: 600; }
.guide-page .done-banner p { color: #a3a3a3; margin: 4px 0 0; font-size: 11.5px; line-height: 1.6; }

/* ---------- 步骤 5 ---------- */
.guide-page .write-intro { display: flex; align-items: center; gap: 13px; padding: 15px; background: #fffbeb; border: 1px solid #fde68a; border-radius: var(--radius); margin-bottom: 18px; }
.guide-page .write-icon { width: 36px; height: 36px; flex: 0 0 auto; border-radius: 9px; display: grid; place-items: center; color: #fff; background: #d97706; font-size: 19px; font-weight: 700; }
.guide-page .write-intro strong { font-size: 13.5px; font-weight: 600; }
.guide-page .write-intro p { margin: 4px 0 0; color: #854d0e; font-size: 12px; line-height: 1.65; }
.guide-page .instruction-shot + .instruction-shot { margin-top: 26px; padding-top: 26px; border-top: 1px solid var(--g-line); }
.guide-page .shot-copy { display: flex; gap: 12px; margin-bottom: 13px; align-items: flex-start; }
.guide-page .shot-copy > span { flex: 0 0 auto; padding: 5px 8px; border-radius: 5px; color: #fff; background: var(--g-ink); font-size: 11px; font-weight: 600; }
.guide-page .shot-copy strong { font-size: 14px; font-weight: 600; }
.guide-page .shot-copy p { margin: 5px 0 0; color: var(--g-muted); font-size: 12px; line-height: 1.75; }
.guide-page .shot-copy b { color: var(--c-text); }
.guide-page .write-checks { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; margin-top: 17px; }
.guide-page .write-checks > div { display: flex; gap: 9px; border-radius: var(--radius-sm); padding: 12px; background: var(--g-soft); border: 1px solid var(--g-line); }
.guide-page .write-checks > div > span { flex: 0 0 auto; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; color: var(--g-green); background: var(--g-pale); font-size: 10px; font-weight: 700; }
.guide-page .write-checks p { margin: 0; display: flex; flex-direction: column; gap: 3px; }
.guide-page .write-checks strong { font-size: 11.5px; font-weight: 600; }
.guide-page .write-checks small { color: var(--g-muted); font-size: 10.5px; line-height: 1.55; }

/* ---------- 步骤 6：接线示意图（矢量，跟步骤 1 同一套语言） ---------- */
.guide-page .hw-frame {
  border-radius: var(--radius); background: var(--g-soft);
  border: 1px solid var(--g-line); padding: 18px 14px;
}
.guide-page .hw-svg { display: block; width: 100%; height: auto; }
.guide-page .hw-body { fill: var(--g-ink); }
.guide-page .hw-body-txt { fill: #fff; font-size: 26px; font-weight: 700; letter-spacing: .1em; }
.guide-page .hw-body-sub { fill: #a3a3a3; font-size: 11px; letter-spacing: .06em; }
.guide-page .hw-power { fill: none; stroke: var(--c-brand); stroke-width: 2; }
.guide-page .hw-power-mark { fill: none; stroke: var(--c-brand); stroke-width: 1.8; stroke-linecap: round; }
.guide-page .hw-cable { fill: none; stroke: var(--c-border-strong); stroke-width: 3; stroke-linecap: round; }
.guide-page .hw-plug rect { fill: #a3a3a3; }
.guide-page .hw-geo rect { fill: var(--g-ink); }
.guide-page .hw-geo path { stroke: var(--g-ink); stroke-width: 3; stroke-linecap: round; fill: none; }
.guide-page .hw-magnet circle { fill: #d4d4d4; stroke: #fff; stroke-width: 3; }
.guide-page .hw-swipe { stroke: var(--c-brand); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 5 5; }
.guide-page .hw-tag { fill: var(--g-muted); font-size: 13px; }
.guide-page .hw-badge circle { fill: var(--g-green); stroke: #fff; stroke-width: 2.5; }
.guide-page .hw-badge text { fill: #fff; font-size: 14px; font-weight: 700; }
.guide-page .hardware-legend { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin-top: 12px; }
.guide-page .hardware-legend > div { display: flex; gap: 8px; padding: 10px; border: 1px solid var(--g-line); border-radius: var(--radius-sm); }
.guide-page .hardware-legend > div > span { flex: 0 0 auto; width: 20px; height: 20px; border-radius: 5px; display: grid; place-items: center; color: #fff; background: var(--g-green); font-size: 10px; font-weight: 700; }
.guide-page .hardware-legend p { margin: 0; display: flex; flex-direction: column; gap: 3px; }
.guide-page .hardware-legend strong { font-size: 11.5px; font-weight: 600; }
.guide-page .hardware-legend small { color: var(--g-muted); font-size: 10px; line-height: 1.5; }
.guide-page .model-note { display: flex; align-items: center; gap: 10px; margin-top: 14px; padding: 12px 14px; border-radius: var(--radius-sm); background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; font-size: 12px; line-height: 1.6; }
.guide-page .model-note b { white-space: nowrap; }
.guide-page .model-note span { color: #3b6fb8; }
.guide-page .power-sequence { display: flex; align-items: center; gap: 16px; margin-top: 14px; border: 1px solid var(--g-line); border-radius: var(--radius); padding: 14px; }
.guide-page .magnet-demo { width: 110px; height: 70px; flex: 0 0 auto; border-radius: var(--radius-sm); background: var(--g-soft); display: flex; align-items: center; justify-content: center; position: relative; }
.guide-page .magnet { width: 24px; height: 24px; border-radius: 50%; background: #a3a3a3; border: 2px solid #fff; box-shadow: 0 2px 6px rgba(0,0,0,.18); transform: translateX(5px); }
.guide-page .power-symbol { width: 34px; height: 34px; border-radius: 8px; background: #fff; border: 1px solid var(--g-line); color: var(--g-green); display: grid; place-items: center; }
.guide-page .power-symbol svg { display: block; }
.guide-page .magnet-demo i { position: absolute; right: 7px; top: 6px; font-style: normal; color: var(--g-green); font-size: 9px; font-weight: 700; }
.guide-page .power-sequence strong { font-size: 13.5px; font-weight: 600; }
.guide-page .power-sequence p { margin: 5px 0 0; color: var(--g-muted); font-size: 11.5px; line-height: 1.7; }
.guide-page .led-check { margin-top: 14px; color: #fff; background: var(--g-ink); border-radius: var(--radius); padding: 16px; }
.guide-page .led-title { display: flex; gap: 10px; align-items: center; }
.guide-page .led-title > span { width: 26px; height: 26px; flex: 0 0 auto; border-radius: 6px; display: grid; place-items: center; background: var(--c-brand); color: var(--g-ink); font-weight: 700; }
.guide-page .led-title strong { font-size: 13.5px; font-weight: 600; }
.guide-page .led-title p { color: #a3a3a3; margin: 3px 0 0; font-size: 11px; }
.guide-page .led-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.guide-page .led-pair > span { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; align-items: center; column-gap: 9px; padding: 10px 12px; background: rgba(255,255,255,.06); border-radius: var(--radius-sm); font-size: 11.5px; font-weight: 600; letter-spacing: .05em; }
.guide-page .led-pair i { grid-row: 1 / 3; width: 11px; height: 11px; border-radius: 50%; background: var(--c-brand); box-shadow: 0 0 10px rgba(128,191,40,.8); animation: guideLed 1.15s infinite; }
.guide-page .led-pair small { color: #a3a3a3; font-size: 9.5px; font-weight: 400; letter-spacing: 0; }
@keyframes guideLed { 50% { opacity: .4; } }

/* ---------- 步骤 7 ---------- */
.guide-page .resource-hero { display: flex; gap: 13px; align-items: center; padding: 16px; border-radius: var(--radius); background: var(--g-pale); border: 1px solid var(--c-tint-border); }
.guide-page .resource-hero > span { width: 36px; height: 36px; flex: 0 0 auto; border-radius: 50%; display: grid; place-items: center; background: var(--g-green); color: #fff; font-weight: 700; }
.guide-page .resource-hero strong { font-size: 14px; font-weight: 600; }
.guide-page .resource-hero p { margin: 5px 0 0; color: var(--g-muted); font-size: 12px; line-height: 1.7; }
.guide-page .resource-card { margin-top: 14px; border: 1px solid var(--g-line); border-radius: var(--radius); padding: 16px; }
.guide-page .resource-head { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.guide-page .resource-head > div { display: flex; flex-direction: column; gap: 3px; }
.guide-page .resource-head strong { font-size: 13.5px; font-weight: 600; }
.guide-page .resource-head small { color: var(--g-muted); font-size: 11px; }
.guide-page .resource-icon { width: 40px; height: 40px; flex: 0 0 auto; border-radius: 10px; display: grid; place-items: center; color: #fff; background: var(--g-green); font-size: 10px; font-weight: 700; letter-spacing: .06em; }
.guide-page .credential-row { display: grid; grid-template-columns: 74px 1fr auto; align-items: center; gap: 9px; min-height: 44px; border-top: 1px solid var(--g-line); font-size: 12px; }
.guide-page .credential-row > span { color: var(--g-muted); }
.guide-page .credential-row code { color: var(--c-text); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; overflow-wrap: anywhere; }
.guide-page .credential-row button { border: 1px solid var(--c-tint-border); border-radius: 6px; color: var(--g-green); background: var(--g-pale); padding: 5px 10px; font-size: 11px; font-weight: 500; cursor: pointer; }
.guide-page .credential-row button:hover { background: var(--g-green); color: #fff; border-color: var(--g-green); }
.guide-page .resource-action { margin-top: 12px; min-height: 40px; border-radius: 6px; display: flex; align-items: center; justify-content: center; gap: 7px; color: #fff; background: var(--g-green); text-decoration: none; font-size: 12.5px; font-weight: 500; }
.guide-page .resource-action:hover { background: var(--g-green-dark); color: #fff; }
.guide-page .website-card { background: var(--g-ink); color: #fff; border-color: var(--g-ink); }
.guide-page .website-card .resource-icon { color: var(--g-ink); background: var(--c-brand); }
.guide-page .website-card .resource-head small { color: #a3a3a3; }
.guide-page .website-link { display: flex; align-items: center; justify-content: space-between; color: #fff; text-decoration: none; border-top: 1px solid rgba(255,255,255,.14); padding-top: 13px; font-size: 12.5px; }
.guide-page .website-link span { color: #d4d4d4; }
.guide-page .website-link b { color: var(--c-brand); }
.guide-page .support-note { display: flex; gap: 9px; margin-top: 14px; padding: 12px; color: var(--g-muted); background: var(--g-soft); border: 1px solid var(--g-line); border-radius: var(--radius-sm); }
.guide-page .support-note span { flex: 0 0 auto; width: 19px; height: 19px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: var(--c-text-mute); font-size: 10px; font-weight: 700; }
.guide-page .support-note p { margin: 1px 0 0; font-size: 11.5px; line-height: 1.7; }

/* ---------- 底部固定操作条 ---------- */
.guide-actions {
  position: fixed; z-index: 40; left: 50%; bottom: 16px; transform: translateX(-50%);
  width: min(calc(100% - 28px), 500px); padding: 8px;
  border: 1px solid var(--c-border); background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 30px rgba(0,0,0,.12); border-radius: 12px;
  display: grid; grid-template-columns: .7fr 1.3fr; gap: 8px;
}
.guide-actions button { height: 46px; border-radius: 8px; font-weight: 500; font-size: 14px; cursor: pointer; }
.guide-actions .back { background: var(--c-subtle); color: var(--c-text); border: 1px solid var(--c-border); }
.guide-actions .back:disabled { color: var(--c-text-mute); cursor: default; }
.guide-actions .next { border: 1px solid var(--g-green); color: #fff; background: var(--g-green); }
.guide-actions .next:hover { background: var(--g-green-dark); border-color: var(--g-green-dark); }
.guide-actions .next span { margin-left: 6px; }
.guide-foot { text-align: center; color: var(--c-text-mute); font-size: 11.5px; letter-spacing: .06em; margin: 32px 0 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 620px) {
  .guide-page { padding: 0 14px 110px; }
  .guide-hero { padding: 32px 8px 20px; }
  .guide-hero h1 { font-size: 26px; }
  .guide-hero > p { font-size: 14px; }
  .guide-stepper { padding: 20px 4px 16px; }
  .guide-stepper .step-label { font-size: 9px; }
  .guide-stepper .step-number { width: 26px; height: 26px; font-size: 10px; }
  .guide-stepper .step-line { top: 35px; left: calc(7.142% + 13px); right: calc(7.142% + 13px); }
  .guide-shell { padding: 20px 16px; min-height: 440px; }
  .guide-page .connection-visual { padding: 26px 8px 20px; }
  .guide-page .laptop-screen { width: 76px; height: 50px; }
  .guide-page .laptop-base { width: 90px; }
  .guide-page .imu-body { width: 62px; height: 74px; }
  .guide-page .checklist { grid-template-columns: 1fr; }
  .guide-page .parameter-grid { grid-template-columns: repeat(2,1fr); }
  .guide-page .mode-list em { display: none; }
  .guide-page .notice-list ul { grid-template-columns: 1fr; }
  .guide-page .write-checks { grid-template-columns: 1fr; }
  .guide-page .hardware-legend { grid-template-columns: 1fr 1fr; }
  .guide-page .model-note { align-items: flex-start; flex-direction: column; gap: 4px; }
  .guide-page .power-sequence { align-items: flex-start; }
  .guide-page .credential-row { grid-template-columns: 60px 1fr auto; }
}

@media (prefers-reduced-motion: reduce) {
  .guide-page *, .guide-page *::before, .guide-page *::after {
    animation-duration: .01ms !important; transition-duration: .01ms !important;
  }
}