:root {
  --tool-paper: #f1efe9;
  --tool-white: #fff;
  --tool-ink: #202426;
  --tool-muted: #687074;
  --tool-line: rgba(32, 36, 38, .18);
  --tool-steel: #66777e;
  --tool-signal: #a43a4f;
  --edge: clamp(1rem, 4vw, 4.5rem);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.accessory-page { margin: 0; color: var(--tool-ink); background: var(--tool-paper); font-family: "Microsoft YaHei", Arial, sans-serif; }
.accessory-page img { display: block; max-width: 100%; }
.accessory-page a { color: inherit; }
.accessory-page .site-header { background: rgba(241, 239, 233, .94); backdrop-filter: blur(16px); }
.accessory-page main { display: flex; flex-direction: column; overflow: clip; }
.accessory-hero { order: 1; }
.accessory-nav { order: 2; }
.aux-section { order: 3; }
.tool-section { order: 4; }
.sequence-section { order: 5; }

.accessory-hero { display: grid; grid-template-columns: .94fr 1.06fr; height: clamp(36rem, 70svh, 42rem); min-height: 0; padding-top: 5.25rem; border-bottom: 1px solid var(--tool-line); }
.accessory-hero__copy { display: grid; align-content: center; min-height: 0; padding: clamp(2rem, 3.5vw, 4.25rem); }
.accessory-hero__copy nav { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: clamp(1.4rem, 3vh, 2.2rem); color: var(--tool-muted); font-size: .66rem; letter-spacing: .08em; }
.accessory-hero__copy nav a { text-decoration: none; }
.accessory-hero__copy > p:first-of-type { margin: 0 0 1.2rem; color: var(--tool-signal); font-size: .65rem; font-weight: 700; letter-spacing: .2em; }
.accessory-hero h1 { max-width: 8.5em; margin: 0; font: 400 clamp(3rem, 4vw, 4.8rem)/1.02 STSong, "Noto Serif SC", serif; letter-spacing: -.065em; }
.accessory-hero h1 em { color: var(--tool-steel); font-style: normal; }
.accessory-hero__lead { max-width: 38rem; margin: 1.4rem 0 0; color: var(--tool-muted); font-size: .82rem; line-height: 1.85; }
.accessory-hero__copy > a { display: flex; justify-content: space-between; margin-top: 1.35rem; padding: .8rem 0; border-bottom: 1px solid var(--tool-ink); font-size: .7rem; font-weight: 700; text-decoration: none; }
.accessory-hero__copy i { font-style: normal; }
.accessory-hero__bench { position: relative; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 1px; width: 100%; height: 100%; min-height: 0; margin: 0; padding: 1px; background: #c9cccb; }
.accessory-hero__bench img { width: 100%; height: 100%; min-width: 0; min-height: 0; padding: clamp(1rem, 2.3vw, 2.8rem); object-fit: contain; object-position: 50% 50%; background: #fff; }
.accessory-hero__bench figcaption { position: absolute; right: 1.4rem; bottom: 1rem; padding: .45rem .7rem; color: var(--tool-muted); background: rgba(255,255,255,.88); font-size: .58rem; letter-spacing: .1em; }
.accessory-hero__bench.accessory-hero__portrait { display: block; overflow: hidden; padding: 0; background: #ddd4c8; }
.accessory-hero__portrait > img { width: 100%; height: 100%; padding: 0; object-fit: cover; object-position: 50% 50%; background: transparent; }
.accessory-hero__portrait figcaption { color: #171b1c; background: rgba(250,248,242,.9); }

.accessory-nav { position: sticky; z-index: 18; top: 4.35rem; display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); border-bottom: 1px solid var(--tool-line); background: rgba(255,255,255,.95); }
.accessory-nav a { padding: 1rem; border-right: 1px solid var(--tool-line); font-size: .65rem; font-weight: 700; text-align: center; text-decoration: none; }
.accessory-nav a:first-child { color: #fff; background: var(--tool-ink); }

.tool-section, .aux-section, .sequence-section { scroll-margin-top: 8.5rem; padding: clamp(5rem, 9vw, 10rem) var(--edge); }
.tool-section { background: var(--tool-white); }
.section-heading { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(3rem, 8vw, 9rem); align-items: end; margin-bottom: clamp(3rem, 6vw, 6rem); }
.section-heading p { margin: 0; color: var(--tool-muted); font-size: .82rem; line-height: 1.95; }
.section-heading > div > p { margin-bottom: 1rem; color: var(--tool-signal); font-size: .64rem; font-weight: 700; letter-spacing: .2em; }
.section-heading h2 { margin: 0; font: 400 clamp(3.2rem, 5.6vw, 6.7rem)/1 STSong, "Noto Serif SC", serif; letter-spacing: -.07em; }

.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(.75rem, 1.25vw, 1.25rem); width: min(100%, 88rem); margin-inline: auto; }
.tool-card, .tool-card--wide { display: grid; grid-column: span 1; grid-template-columns: 1fr; grid-template-rows: clamp(13.5rem, 17vw, 18.5rem) 1fr; min-width: 0; overflow: hidden; border: 1px solid var(--tool-line); background: #fff; }
.tool-card figure { display: grid; place-items: center; min-width: 0; min-height: 0; margin: 0; overflow: visible; background: #f5f6f5; }
.tool-card figure img { width: 100%; height: 100%; min-width: 0; min-height: 0; padding: clamp(1.25rem, 2vw, 2.25rem); object-fit: contain; object-position: 50% 50%; }
.tool-card > div { padding: clamp(1.25rem, 1.8vw, 1.8rem); border-top: 1px solid var(--tool-line); }
.tool-card--wide > div { border-top: 1px solid var(--tool-line); border-left: 0; }
.tool-card span, .aux-card span { color: var(--tool-signal); font-size: .6rem; font-weight: 700; letter-spacing: .16em; }
.tool-card h3, .aux-card h3 { margin: .85rem 0 .75rem; font: 400 clamp(1.65rem, 2vw, 2.35rem)/1.12 STSong, "Noto Serif SC", serif; }
.tool-card p, .aux-card p { margin: 0; color: var(--tool-muted); font-size: .73rem; line-height: 1.85; }
.tool-card dl { margin: 1.5rem 0 0; border-top: 1px solid var(--tool-line); }
.tool-card dl > div { display: grid; grid-template-columns: 1fr 1.3fr; gap: 1rem; padding: .7rem 0; border-bottom: 1px solid var(--tool-line); }
.tool-card dt { color: var(--tool-muted); font-size: .62rem; }
.tool-card dd { margin: 0; font: 400 .75rem/1.4 STSong, "Noto Serif SC", serif; text-align: right; }

.aux-section { color: #f5f3ee; background: #252b2e; }
.section-heading--light p { color: rgba(255,255,255,.62); }
.section-heading--light > div > p { color: #d7a8b2; }
.aux-heading { grid-template-columns: minmax(7rem, .2fr) minmax(22rem, .95fr) minmax(20rem, .72fr); gap: clamp(2rem, 4.5vw, 5.5rem); align-items: start; width: min(100%, 88rem); margin: 0 auto clamp(3.5rem, 5vw, 5.5rem); padding-top: 1.25rem; border-top: 1px solid rgba(255,255,255,.2); }
.aux-heading__index { margin: .55rem 0 0; color: #d7a8b2 !important; font-size: .64rem !important; font-weight: 700; letter-spacing: .18em; white-space: nowrap; }
.aux-heading .aux-heading__title > h2 { max-width: 8.5em; margin: 0; font-size: clamp(3.2rem, 4.8vw, 5.7rem); line-height: 1.04; letter-spacing: -.065em; }
.aux-heading__intro { padding: .55rem 0 0 clamp(1.4rem, 2.2vw, 2.5rem); border-left: 1px solid rgba(255,255,255,.18); }
.aux-heading .aux-heading__intro > p { margin: 0; color: rgba(255,255,255,.68); font-size: .82rem; line-height: 1.95; }
.aux-heading__intro ol { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 2rem 0 0; padding: 0; border-top: 1px solid rgba(255,255,255,.2); border-left: 1px solid rgba(255,255,255,.2); list-style: none; }
.aux-heading__intro li { display: grid; gap: .35rem; align-content: center; min-height: 3.7rem; padding: .6rem; border-right: 1px solid rgba(255,255,255,.2); border-bottom: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.88); font-size: .66rem; line-height: 1.35; }
.aux-heading__intro li span { color: #d7a8b2; font-size: .58rem; font-weight: 700; letter-spacing: .08em; }
.aux-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(.7rem, 1vw, 1rem); width: min(100%, 100rem); margin-inline: auto; }
.aux-card { display: grid; grid-template-columns: 1fr; grid-template-rows: clamp(13rem, 16vw, 17rem) 1fr; min-width: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.16); background: #30373a; }
.aux-card figure { display: grid; place-items: center; min-width: 0; min-height: 0; margin: 0; overflow: visible; background: #fff; }
.aux-card figure img { width: 100%; height: 100%; min-width: 0; min-height: 0; padding: clamp(1rem, 1.5vw, 1.6rem); object-fit: contain; object-position: 50% 50%; }
.aux-card > div { display: flex; flex-direction: column; padding: clamp(1.2rem, 1.5vw, 1.6rem); }
.aux-card p { min-height: 0; color: rgba(255,255,255,.62); }
.aux-card dl { margin: 1.35rem 0 0; border-top: 1px solid rgba(255,255,255,.18); }
.aux-card dl > div { display: grid; grid-template-columns: minmax(5rem, .8fr) minmax(0, 1.2fr); gap: .65rem; padding: .62rem 0; border-bottom: 1px solid rgba(255,255,255,.13); }
.aux-card dt { color: rgba(255,255,255,.48); font-size: .6rem; line-height: 1.5; }
.aux-card dd { margin: 0; color: rgba(255,255,255,.9); font: 400 .69rem/1.45 STSong, "Noto Serif SC", serif; text-align: right; }
.aux-note { display: grid; grid-template-columns: .35fr 1fr; gap: 2rem; margin-top: 1px; padding: 1.5rem; color: #202426; background: #d8d3c9; }
.aux-note b { font: 400 1.3rem/1.3 STSong, "Noto Serif SC", serif; }
.aux-note p { max-width: 64rem; margin: 0; font-size: .7rem; line-height: 1.85; }

.sequence-section { background: var(--tool-paper); }
.sequence-section > header { display: grid; grid-template-columns: .4fr 1fr; gap: 3rem; align-items: end; margin-bottom: 4rem; }
.sequence-section > header p { color: var(--tool-signal); font-size: .64rem; font-weight: 700; letter-spacing: .2em; }
.sequence-section h2 { margin: 0; font: 400 clamp(3.2rem, 5.6vw, 6.7rem)/1 STSong, "Noto Serif SC", serif; letter-spacing: -.07em; }
.sequence-section ol { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--tool-line); border-left: 1px solid var(--tool-line); list-style: none; }
.sequence-section li { min-height: 18rem; padding: 1.4rem; border-right: 1px solid var(--tool-line); border-bottom: 1px solid var(--tool-line); }
.sequence-section li > span { color: var(--tool-signal); font-size: .65rem; }
.sequence-section li h3 { margin: 5rem 0 .8rem; font: 400 1.7rem/1.2 STSong, "Noto Serif SC", serif; }
.sequence-section li p { margin: 0; color: var(--tool-muted); font-size: .72rem; line-height: 1.8; }
.sequence-section > a { display: flex; justify-content: space-between; margin-top: 1.2rem; padding: 1.1rem 1.3rem; color: #fff; background: var(--tool-signal); font-size: .72rem; font-weight: 700; text-decoration: none; }
.sequence-section i { font-style: normal; }
.accessory-footer { color: var(--tool-ink); border-top: 1px solid var(--tool-line); background: #fff; }
.accessory-footer p { color: var(--tool-ink); opacity: .7; }

@media (max-width: 1100px) {
  .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .aux-heading { grid-template-columns: 7rem minmax(0, 1fr); }
  .aux-heading__intro { grid-column: 2; margin-top: -.5rem; }
  .aux-grid { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: minmax(19rem, 23rem); justify-content: start; overflow-x: auto; padding-bottom: .8rem; scroll-snap-type: x proximity; }
  .aux-card { grid-template-rows: 15rem 1fr; min-height: 0; scroll-snap-align: start; }
  .sequence-section ol { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .accessory-hero { grid-template-columns: 1fr; height: auto; min-height: 0; padding-top: 4.7rem; }
  .accessory-hero__copy { min-height: 0; padding: clamp(2.8rem, 7vh, 4rem) 1rem; }
  .accessory-hero__copy nav { margin-bottom: 2rem; }
  .accessory-hero__bench { height: 50svh; min-height: 0; }
  .accessory-nav { top: 4.7rem; display: flex; overflow-x: auto; }
  .accessory-nav a { flex: 1 0 auto; min-width: 8rem; }
  .section-heading, .sequence-section > header { grid-template-columns: 1fr; gap: 2rem; }
  .aux-heading { grid-template-columns: 1fr; gap: 1.6rem; }
  .aux-heading__intro { grid-column: 1; margin-top: 0; padding: 1.4rem 0 0; border-top: 1px solid rgba(255,255,255,.18); border-left: 0; }
  .tool-section, .aux-section, .sequence-section { padding: 4.5rem 1rem; }
  .tool-card--wide { grid-column: span 1; grid-template-columns: 1fr; grid-template-rows: clamp(18rem, 25vw, 26rem) 1fr; }
  .tool-card--wide > div { border-top: 1px solid var(--tool-line); border-left: 0; }
  .aux-note { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .accessory-hero__bench { grid-template-columns: 1fr 1fr; height: 46svh; min-height: 0; }
  .accessory-hero__bench img { padding: .7rem; }
  .accessory-hero__portrait > img { padding: 0; object-position: 62% 50%; }
  .tool-grid, .sequence-section ol { grid-template-columns: 1fr; }
  .tool-card, .tool-card--wide { grid-template-rows: 13.5rem 1fr; }
  .aux-grid { grid-auto-columns: minmax(17rem, 84vw); }
  .aux-card { grid-template-rows: 14rem 1fr; }
  .sequence-section li { min-height: 14rem; }
  .sequence-section li h3 { margin-top: 3rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .tool-card figure img { transition: none; }
}