:root { --about-paper: #f5f0e7; --about-ink: #171411; --about-red: #d4471f; --about-line: #b9ae9c; --about-cream: #fff7e9; --about-red-deep: #a53418; }
.about-body { margin: 0; background: var(--about-paper); color: var(--about-ink); }
.about-body .public-main { padding: 0; max-width: none; }
.about-page { overflow: hidden; }
.about-page h1, .about-page h2, .about-page h3, .about-page h4, .about-page p { text-wrap: pretty; }
img { max-width: 100%; display: block; }

/* intro */
.about-intro { width: min(1240px, calc(100% - 48px)); margin: 0 auto; padding: 26px 0 34px; border-bottom: 1px solid var(--about-ink); display: flex; justify-content: space-between; align-items: end; gap: 32px; }
.about-intro .brand-lockup { align-self: start; }
.about-intro div { max-width: 760px; }
.about-intro p { margin: 0 0 12px; color: var(--about-red); font-weight: 800; }
.about-intro h1 { margin: 0; font-size: clamp(2.35rem, 5vw, 4.7rem); line-height: .98; letter-spacing: -.04em; }
.about-intro h1 span { display: block; }

/* hero shot : 去留白(自然高) + 响应式 picture */
.about-hero-shot { width: min(1240px, calc(100% - 48px)); margin: 34px auto 0; }
.about-hero-shot img { width: 100%; height: auto; border: 1px solid var(--about-ink); background: #fffaf0; }
.about-hero-shot figcaption { display: flex; gap: 18px; justify-content: space-between; padding: 14px 0 0; line-height: 1.6; }
.about-hero-shot figcaption strong { color: var(--about-red); white-space: nowrap; }

/* manifesto */
.about-manifesto { width: min(980px, calc(100% - 48px)); margin: clamp(60px, 9vw, 130px) auto 0; }
.about-eyebrow { margin: 0 0 16px; color: var(--about-red); font-weight: 800; letter-spacing: .04em; }
.about-manifesto h2 { max-width: none; margin: 0 0 34px; font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1.04; letter-spacing: -.04em; }
.about-manifesto h2 br { display: none; }
.about-question { margin: 0 0 14px; padding: 26px 0; border-block: 1px solid var(--about-ink); font-size: clamp(1.3rem, 2.4vw, 2rem); line-height: 1.6; font-weight: 700; }
.manifesto-block { display: grid; grid-template-columns: auto 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--about-line); align-items: start; }
.manifesto-block .manifesto-no, .manifesto-heal .manifesto-no { font: 700 clamp(1.5rem, 2.4vw, 2.4rem)/1 var(--serif, Georgia); color: var(--about-red); }
.manifesto-block h3 { margin: 4px 0 10px; font-size: clamp(1.4rem, 2.4vw, 2rem); }
.manifesto-block p { margin: 0; max-width: 62ch; line-height: 1.85; color: var(--about-ink); }
.manifesto-heal { display: grid; grid-template-columns: auto 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--about-line); align-items: start; }
.manifesto-heal h3 { margin: 4px 0 18px; font-size: clamp(1.4rem, 2.4vw, 2rem); }
.heal-grid { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.heal-grid article { padding: 24px 22px; border: 1px solid var(--about-line); border-radius: 18px; background: var(--about-cream); }
.heal-grid h4 { margin: 0 0 10px; font-size: clamp(1.1rem, 1.8vw, 1.35rem); color: var(--about-red-deep); }
.heal-grid p { margin: 0; line-height: 1.8; font-size: 1rem; }
.manifesto-block--dark { grid-template-columns: auto 1fr; background: var(--about-ink); color: var(--about-cream); padding: 26px 24px; border-radius: 18px; border-bottom: 0; margin-top: 22px; }
.manifesto-block--dark p { color: var(--about-cream); }
.manifesto-block--dark .manifesto-no { color: var(--about-red); }
.about-promise { margin: 30px 0 0; font-size: clamp(1.15rem, 1.8vw, 1.4rem); line-height: 1.8; }
.about-promise strong { color: var(--about-red); }
.about-conversion { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; padding: 26px 0 0; }
.about-conversion .button { min-height: 52px; }

/* sections base */
.about-interviewer, .about-advantages, .about-process, .about-proof, .about-join { width: min(1240px, calc(100% - 48px)); margin: clamp(72px, 10vw, 150px) auto 0; }
.about-interviewer > header, .about-advantages > header, .about-process > header, .about-proof > header { display: grid; grid-template-columns: minmax(180px, .38fr) minmax(0, 1fr); gap: 32px; align-items: start; margin-bottom: 40px; }
.about-interviewer > header p, .about-advantages > header p, .about-process > header p, .about-proof > header p, .about-join > div > p { color: var(--about-red); font-weight: 800; }
.about-interviewer h2, .about-advantages h2, .about-process h2, .about-proof h2, .about-join h2 { margin: 0; font-size: clamp(2rem, 4.2vw, 4rem); line-height: 1.08; letter-spacing: -.035em; }
.about-page h2 > span { display: block; }
.about-interviewer h2 > span, .about-process h2 > span, .about-proof h2 > span { white-space: nowrap; }
.about-advantages h2 { font-size: clamp(2rem, 3vw, 2.7rem); }

/* compare */
.compare { display: grid; grid-template-columns: 1fr auto 1fr; align-items: stretch; gap: 0; }
.compare-card { padding: clamp(26px, 4vw, 46px); border: 1px solid var(--about-ink); }
.compare-card--muted { background: var(--about-cream); }
.compare-card--brand { background: var(--about-ink); color: var(--about-cream); border-left: 0; }
.compare-tag { font-weight: 800; color: var(--about-red); margin: 0 0 22px; }
.compare-card--brand .compare-tag { color: var(--about-red); }
.compare-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.compare-card li { display: grid; gap: 3px; line-height: 1.6; }
.compare-card li span { font-weight: 800; font-size: 1.1rem; }
.compare-vs { display: grid; place-items: center; align-self: center; padding: 0 18px; color: var(--about-red); font-weight: 900; letter-spacing: .1em; font-size: 1.2rem; }

/* advantages */
.advantage-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.adv { padding: clamp(24px, 3.4vw, 42px); border: 1px solid var(--about-line); background: var(--about-cream); }
.adv--hl { background: var(--about-red); color: var(--about-cream); }
.adv--hl p { color: var(--about-cream); }
.adv > span { color: var(--about-red); font-weight: 900; letter-spacing: .12em; }
.adv--hl > span { color: var(--about-cream); }
.adv h3 { margin: 32px 0 12px; font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
.adv p { margin: 0; max-width: 46ch; line-height: 1.8; }

/* process */
.process-steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--about-ink); }
.process-steps li { display: grid; grid-template-columns: 60px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--about-line); align-items: center; }
.step-no { font: 700 1.6rem/1 var(--serif, Georgia); color: var(--about-red); }
.process-steps strong { font-size: 1.3rem; }
.process-steps p { margin: 4px 0 0; color: var(--about-ink); }

/* proof */
.about-proof .shot { margin: 0; }
.shot--wide { margin: 0 0 24px; }
.shot img { width: 100%; height: auto; border: 1px solid var(--about-ink); background: #fffaf0; }
.shot figcaption { display: flex; gap: 18px; justify-content: space-between; padding: 12px 0 0; line-height: 1.6; }
.shot figcaption strong { color: var(--about-red); white-space: nowrap; }
.shot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.shot-grid figcaption { display: grid; gap: 7px; }

/* trust */
.about-trust { width: min(1240px, calc(100% - 48px)); margin: clamp(72px, 10vw, 150px) auto 0; padding: clamp(40px, 7vw, 86px); background: var(--about-ink); color: var(--about-cream); }
.about-trust h2 { max-width: 15ch; margin: 0; font-size: clamp(2rem, 4.2vw, 4rem); line-height: 1.08; letter-spacing: -.035em; }
.about-trust h2 span { display: block; }
.about-trust dl { display: grid; grid-template-columns: repeat(4, 1fr); margin: 64px 0 0; border-top: 1px solid var(--about-cream); }
.about-trust dl div { padding: 25px 18px 0 0; }
.about-trust dt { color: var(--about-red); font-size: 1.25rem; font-weight: 800; }
.about-trust dd { margin: 12px 0 0; line-height: 1.75; }

/* tutorial */
.about-tutorial { width: min(1240px, calc(100% - 48px)); margin: clamp(56px, 8vw, 96px) auto 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: clamp(28px, 4vw, 44px); border: 1px solid var(--about-ink); background: var(--about-cream); }
.about-tutorial p { margin: 0 0 6px; color: var(--about-red); font-weight: 800; }
.about-tutorial strong { font-size: clamp(1.3rem, 2.2vw, 1.8rem); line-height: 1.3; }
.about-tutorial .button { flex: none; min-height: 52px; }

/* join */
.about-join { display: grid; grid-template-columns: .75fr 1.25fr; gap: 40px; align-items: end; margin-bottom: 52px; padding-top: 30px; border-top: 2px solid var(--about-ink); scroll-margin-top: 24px; }
.about-join > div > span { display: block; margin-top: 20px; line-height: 1.7; }
.about-join address { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; font-style: normal; }
.about-join address p { display: grid; grid-template-columns: 1fr auto auto; gap: 14px; align-items: center; margin: 0; padding: 18px 0; border-bottom: 1px solid var(--about-line); }
.about-join address a { color: var(--about-red); font-size: 1rem; font-weight: 800; }
.about-legal { width: min(1240px, calc(100% - 48px)); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--about-line); color: #6b6358; font-size: .9rem; }
.about-legal a { color: inherit; }
.about-filings { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 22px; }
.about-filings .filing-link { display: inline-flex; align-items: center; gap: 6px; }
.about-filings .filing-link img { flex: 0 0 auto; object-fit: contain; }
.about-skill-dialog { width: min(660px, calc(100vw - 32px)); border: 2px solid var(--about-ink); border-radius: 0; padding: clamp(26px, 5vw, 50px); background: var(--about-paper); color: var(--about-ink); }
.about-skill-dialog::backdrop { background: rgb(23 20 17 / 72%); }
.about-skill-dialog h2 { max-width: 18ch; margin: 10px 0 22px; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.08; }
.about-skill-dialog p { line-height: 1.75; }
.skill-example { margin: 26px 0; padding: 22px 0; border-block: 1px solid var(--about-line); }

/* —— 手机端：独立单栏 —— */
@media (max-width: 760px) {
  .about-intro, .about-hero-shot, .about-manifesto, .about-interviewer, .about-advantages, .about-process, .about-proof, .about-join, .about-tutorial, .about-trust { width: min(100% - 32px, 640px); }
  .about-intro { display: grid; padding-top: 18px; gap: 4px; }
  .about-intro h1 { font-size: clamp(2rem, 11vw, 3.2rem); }
  .about-hero-shot { margin-top: 20px; }
  .about-hero-shot figcaption, .shot figcaption { display: grid; gap: 5px; }
  .about-manifesto h2 { margin-bottom: 24px; font-size: clamp(1.8rem, 8.4vw, 2.5rem); }
  .about-question { font-size: 1.15rem; padding: 20px 0; }
  .manifesto-block, .manifesto-heal { grid-template-columns: 1fr; gap: 8px; padding: 22px 0; }
  .heal-grid { grid-template-columns: 1fr; gap: 14px; }
  .about-promise { font-size: 1.08rem; }
  .about-conversion { display: grid; }
  .about-conversion .button, .about-conversion .text-link { width: 100%; text-align: center; }
  .about-interviewer > header, .about-advantages > header, .about-process > header, .about-proof > header { display: grid; grid-template-columns: 1fr; gap: 8px; }
  .about-page h2 > span { white-space: normal; }
  .about-interviewer h2, .about-advantages h2, .about-process h2, .about-proof h2, .about-join h2, .about-trust h2 { font-size: clamp(1.9rem, 9vw, 3rem); }
  .compare { grid-template-columns: 1fr; }
  .compare-vs { padding: 12px 0; }
  .compare-card--brand { border-left: 1px solid var(--about-ink); border-top: 0; }
  .advantage-grid { grid-template-columns: 1fr; }
  .adv h3 { margin-top: 22px; }
  .process-steps li { grid-template-columns: 46px 1fr; }
  .shot-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-trust { width: 100%; }
  .about-trust dl { grid-template-columns: 1fr; margin-top: 38px; }
  .about-trust dl div { padding: 22px 0; border-bottom: 1px solid rgb(255 247 233 / 35%); }
  .about-tutorial { flex-direction: column; align-items: stretch; text-align: center; gap: 18px; }
  .about-tutorial .button { width: 100%; }
  .about-join { grid-template-columns: 1fr; gap: 30px; margin-bottom: 70px; }
  .about-join address { grid-template-columns: 1fr; gap: 8px; }
  .about-join address p { grid-template-columns: 1fr; gap: 4px; }
  .about-legal { width: calc(100% - 32px); display: grid; gap: 8px; justify-items: start; padding: 18px 0; }
  .about-filings { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }