:root {
    --green-950: #08281f;
    --green-900: #103f33;
    --green-800: #185444;
    --green-700: #28705a;
    --green-500: #52b788;
    --green-100: #dff3e6;
    --green-50: #f2f8f4;
    --gold: #b88710;
    --gold-light: #e8cf8a;
    --red: #8f2635;
    --ink: #173329;
    --muted: #61736b;
    --line: #cfe0d5;
    --white: #ffffff;
    --paper: #fbfdfb;
    --nav-height: 72px;
  }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
  }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.about-hero {
    position: relative;
    isolation: isolate;
    min-height: 680px;
    height: min(84svh, 860px);
    margin-top: var(--nav-height);
    overflow: hidden;
    color: var(--green-900);
    background: linear-gradient(120deg, var(--green-100), var(--green-50));
  }
.about-hero::before {
    content: "";
    position: absolute;
    z-index: -3;
    inset: 0;
    background: url("/wp-content/themes/supersyn/assets/img/product-01-black-gold-capsule.png") 80% 47% / min(62vw, 820px) auto no-repeat;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, transparent 34%, #000 56%, #000 100%);
    mask-image: linear-gradient(90deg, transparent 0%, transparent 34%, #000 56%, #000 100%);
  }
.about-hero::after {
    content: "";
    position: absolute;
    z-index: -2;
    inset: 0;
    background:
      linear-gradient(90deg, rgba(242,248,244,0.96) 0%, rgba(223,243,230,0.84) 38%, rgba(223,243,230,0.3) 68%, rgba(242,248,244,0.04) 100%),
      linear-gradient(180deg, transparent 72%, rgba(223,243,230,0.34) 100%);
  }
.hero-inner {
    width: min(1180px, 90vw);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
  }
.hero-copy { width: min(660px, 58vw); padding-bottom: 22px; }
.eyebrow {
    display: block;
    margin-bottom: 20px;
    color: var(--gold);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
  }
.about-hero h1 {
    margin: 0 0 22px;
    font-size: 68px;
    line-height: 1.08;
    font-weight: 800;
    letter-spacing: 0;
  }
.hero-positioning {
    margin: 0 0 22px;
    color: var(--green-800);
    font-size: 24px;
    line-height: 1.45;
    font-weight: 600;
  }
.hero-description {
    max-width: 620px;
    margin: 0 0 34px;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.9;
  }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 750;
    transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
  }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--green-900); }
.button-secondary { color: var(--green-900); border-color: rgba(16,63,51,0.36); background: rgba(255,255,255,0.46); }
.hero-index {
    position: absolute;
    left: 5vw;
    right: 5vw;
    bottom: 22px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(16,63,51,0.18);
    color: rgba(16,63,51,0.62);
    font-size: 12px;
  }
.band { width: 100%; }
.band-inner { width: min(1180px, 90vw); margin: 0 auto; }
.belief-band { padding: 94px 0 88px; background: var(--white); }
.section-intro { max-width: 840px; }
.section-label {
    display: block;
    margin-bottom: 14px;
    color: var(--gold);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
  }
.section-title {
    margin: 0;
    color: var(--green-900);
    font-size: 44px;
    line-height: 1.25;
    font-weight: 800;
    letter-spacing: 0;
  }
.section-lead {
    margin: 24px 0 0;
    color: var(--muted);
    font-size: 19px;
    line-height: 1.9;
  }
.principles {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin-top: 64px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
.principle { padding: 34px 34px 36px 0; }
.principle + .principle { padding-left: 34px; border-left: 1px solid var(--line); }
.principle-number { color: var(--red); font-size: 13px; font-weight: 800; }
.principle h3 { margin: 12px 0 10px; font-size: 23px; color: var(--green-900); }
.principle p { margin: 0; color: var(--muted); font-size: 15px; }
.method-band { padding: 92px 0; background: var(--green-50); }
.method-grid {
    display: grid;
    grid-template-columns: 0.88fr 1.12fr;
    gap: 72px;
    align-items: start;
  }
.method-visual {
    position: sticky;
    top: 104px;
    min-height: 560px;
    overflow: hidden;
    background: var(--green-900) url("/wp-content/themes/supersyn/assets/img/research-lab-desktop.jpg") center / cover no-repeat;
  }
.method-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8,40,31,0.12), rgba(8,40,31,0.72));
  }
.method-caption {
    position: absolute;
    z-index: 1;
    left: 26px;
    right: 26px;
    bottom: 24px;
    margin: 0;
    color: rgba(255,255,255,0.88);
    font-size: 14px;
  }
.method-content .section-title { font-size: 40px; }
.method-list { margin-top: 40px; border-top: 1px solid var(--line); }
.method-item {
    display: grid;
    grid-template-columns: 66px 1fr;
    gap: 18px;
    padding: 28px 0;
    border-bottom: 1px solid var(--line);
  }
.method-item strong { color: var(--gold); font-size: 14px; }
.method-item h3 { margin: 0 0 8px; color: var(--green-900); font-size: 22px; }
.method-item p { margin: 0; color: var(--muted); }
.happening-band { padding: 92px 0; background: var(--white); }
.pathways {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 50px;
  }
.pathway {
    min-height: 260px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--paper);
  }
.pathway:nth-child(2) { border-top-color: var(--red); }
.pathway:nth-child(3) { border-top-color: var(--gold); }
.pathway-tag { color: var(--gold); font-size: 12px; font-weight: 800; }
.pathway h3 { margin: 18px 0 10px; color: var(--green-900); font-size: 25px; }
.pathway p { margin: 0; color: var(--muted); font-size: 15px; }
.pathway-link { margin-top: 24px; color: var(--green-700); font-size: 14px; font-weight: 800; }
.facts-band { padding: 92px 0; background: var(--green-900); color: var(--white); }
.facts-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 76px;
    align-items: start;
  }
.facts-band .section-label { color: var(--gold-light); }
.facts-band .section-title { color: var(--white); }
.facts-band .section-lead { color: rgba(255,255,255,0.72); font-size: 16px; }
.facts-list { margin: 0; border-top: 1px solid rgba(255,255,255,0.2); }
.fact-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 24px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
  }
.fact-row dt { color: rgba(255,255,255,0.62); font-size: 13px; }
.fact-row dd { margin: 0; font-size: 16px; font-weight: 650; overflow-wrap: anywhere; }
.fact-row a { text-decoration: underline; text-decoration-color: rgba(255,255,255,0.36); text-underline-offset: 4px; }
.channels-band { padding: 92px 0; background: var(--paper); }
.references-band { padding: 92px 0; background: #eef2f0; }
.channels-layout {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: 76px;
    align-items: start;
  }
.channel-list { border-top: 1px solid var(--line); }
.channel-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
    min-height: 82px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }
.channel-row strong { display: block; color: var(--green-900); font-size: 17px; }
.channel-row span { display: block; color: var(--muted); font-size: 13px; }
.channel-row a {
    min-width: 90px;
    padding: 8px 14px;
    text-align: center;
    color: var(--green-800);
    border: 1px solid var(--green-700);
    border-radius: 4px;
    font-size: 13px;
    font-weight: 800;
  }
.reference-note {
    margin-top: 18px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.75;
  }
.contact-band { padding: 86px 0; background: #eef2f0; }
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: end;
  }
.contact-copy h2 { margin: 0 0 20px; color: var(--green-900); font-size: 38px; line-height: 1.3; }
.contact-copy p { margin: 0; color: var(--muted); font-size: 16px; }
.contact-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.contact-action {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 118px;
    padding: 20px;
    color: var(--white);
    background: var(--green-800);
    border-radius: 6px;
  }
.contact-action:last-child { background: var(--red); }
.contact-action strong { font-size: 17px; }
.contact-action span { margin-top: 5px; color: rgba(255,255,255,0.74); font-size: 13px; }
.closing-band {
    min-height: 420px;
    display: flex;
    align-items: center;
    color: var(--white);
    background:
      linear-gradient(90deg, rgba(8,40,31,0.92), rgba(8,40,31,0.56)),
      url("/wp-content/themes/supersyn/assets/img/brand-philosophy-bg.jpg") center / cover no-repeat;
  }
.closing-copy { max-width: 720px; }
.closing-copy h2 { margin: 0 0 18px; font-size: 48px; line-height: 1.25; }
.closing-copy p { margin: 0 0 30px; color: rgba(255,255,255,0.76); font-size: 17px; }
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 520ms ease, transform 520ms ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (max-width: 1120px) {
.about-hero::before { background-position: 92% 48%; background-size: 68vw auto; }

}
@media (max-width: 900px) {
.about-hero {
      min-height: 650px;
      height: min(80svh, 760px);
    }
.about-hero::before {
      background: url("/wp-content/themes/supersyn/assets/img/product-01-black-gold-capsule.png") center 24% / cover no-repeat;
      -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 56%, rgba(0,0,0,0.72) 72%, transparent 100%);
      mask-image: linear-gradient(180deg, #000 0%, #000 56%, rgba(0,0,0,0.72) 72%, transparent 100%);
    }
.about-hero::after {
      background: linear-gradient(180deg, rgba(242,248,244,0.12) 0%, rgba(223,243,230,0.24) 34%, rgba(223,243,230,0.9) 62%, rgba(242,248,244,0.99) 100%);
    }
.hero-inner { align-items: flex-end; padding-bottom: 82px; }
.hero-copy { width: 100%; padding: 0; }
.about-hero h1 { font-size: 46px; }
.hero-positioning { font-size: 21px; }
.hero-description { max-width: 620px; font-size: 15px; }
.hero-index { display: none; }
.principles { grid-template-columns: 1fr; }
.principle { padding: 28px 0; }
.principle + .principle { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
.method-grid, .facts-layout, .channels-layout, .contact-layout { grid-template-columns: 1fr; gap: 42px; }
.method-visual { position: relative; top: auto; min-height: 440px; }
.pathways { grid-template-columns: 1fr; }
.pathway { min-height: 220px; }

}
@media (max-width: 620px) {
:root { --nav-height: 64px; }
.about-hero {
      min-height: 610px;
      height: 82svh;
      max-height: 730px;
    }
.hero-inner, .band-inner { width: calc(100% - 40px); }
.hero-inner { padding-bottom: 44px; }
.eyebrow { margin-bottom: 12px; font-size: 11px; }
.about-hero h1 { margin-bottom: 14px; font-size: 40px; line-height: 1.12; }
.hero-positioning { margin-bottom: 12px; font-size: 18px; }
.hero-description { margin-bottom: 22px; font-size: 14px; line-height: 1.75; }
.hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
.button { min-height: 44px; padding: 0 12px; font-size: 13px; }
.belief-band, .method-band, .happening-band, .facts-band, .references-band, .channels-band { padding: 66px 0; }
.contact-band { padding: 62px 0; }
.section-title { font-size: 32px; }
.section-lead { margin-top: 18px; font-size: 16px; }
.principles { margin-top: 38px; }
.principle h3 { font-size: 21px; }
.method-content .section-title { font-size: 31px; }
.method-visual { min-height: 330px; }
.method-item { grid-template-columns: 48px 1fr; gap: 12px; padding: 24px 0; }
.method-item h3 { font-size: 20px; }
.pathways { margin-top: 36px; }
.pathway { min-height: 210px; padding: 24px; }
.fact-row { grid-template-columns: 1fr; gap: 5px; padding: 17px 0; }
.channel-row { grid-template-columns: 1fr; gap: 10px; min-height: 96px; }
.channel-row a { width: 100%; }
.contact-copy h2 { font-size: 30px; }
.contact-actions { grid-template-columns: 1fr; }
.contact-action { min-height: 104px; }
.closing-band { min-height: 380px; }
.closing-copy h2 { font-size: 38px; }

}
@media (prefers-reduced-motion: reduce) {
html { scroll-behavior: auto; }
.reveal { opacity: 1; transform: none; transition: none; }
.button { transition: none; }

}

/* 导航统一成首页那一份，高度跟着改 */
:root { --nav-height: 68px; }
@media (max-width: 900px) { :root { --nav-height: 60px; } }