/*
 * [INPUT]: 依赖 index.html 的语义类名与浏览器原生 CSS 动画能力
 * [OUTPUT]: 提供六档字体体系、首屏产品锚点、使命标题逐句分行、居中的产品图标与名称、左对齐的产品说明及响应式布局
 * [POS]: public 模块的视觉层，与 index.html 的内容结构配合
 * [PROTOCOL]: 变更时更新此头部，然后检查 CLAUDE.md
 */
    :root {
      --ink: #28231f;
      --ink-soft: #665e56;
      --paper: #f8f3eb;
      --paper-deep: #efe5d8;
      --cream: #fffaf3;
      --amber: #c9782b;
      --amber-ink: #a45d20;
      --amber-bright: #ef9d43;
      --amber-soft: #e9b77d;
      --line: rgba(78, 61, 47, 0.14);
      --shadow: rgba(87, 56, 28, 0.12);
      --serif: Georgia, "Times New Roman", Times, serif;
      --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      /* 字号体系：六档，全部走 token，禁止散落硬编码 */
      --type-display: clamp(58px, 6.5vw, 90px);   /* Hero 大标题 */
      --type-heading: clamp(42px, 4.4vw, 56px);   /* 章节大标题（宣言 / Contact） */
      --type-item: 28px;                          /* 产品名 */
      --type-lead: clamp(32px, 3vw, 40px);        /* 品牌释义 */
      --type-body: 18px;                          /* 正文、列表、链接 */
      --type-small: 13px;                         /* 标签、pill、页脚 */
    }

    * { box-sizing: border-box; }

    html {
      scroll-behavior: smooth;
      background: var(--paper);
    }

    body {
      margin: 0;
      color: var(--ink);
      background:
        radial-gradient(circle at 82% 10%, rgba(231, 165, 89, 0.13), transparent 27rem),
        radial-gradient(circle at 8% 42%, rgba(216, 175, 127, 0.09), transparent 28rem),
        var(--paper);
      font-family: var(--sans);
      font-size: var(--type-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a { color: inherit; }

    .shell {
      width: min(1180px, calc(100% - 48px));
      margin-inline: auto;
    }

    .site-header {
      position: relative;
      z-index: 10;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 92px;
      border-bottom: 1px solid var(--line);
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      text-decoration: none;
      font-family: var(--serif);
      font-size: var(--type-body);
      font-weight: 600;
      letter-spacing: -0.02em;
    }

    .brand-mark {
      position: relative;
      width: 25px;
      height: 25px;
      border: 1px solid rgba(201, 120, 43, 0.45);
      border-radius: 50%;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 7px;
      border-radius: 50%;
      background: linear-gradient(145deg, #ffc875, #cc7123);
      box-shadow: 0 2px 9px rgba(201, 120, 43, 0.38);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      top: 1px;
      right: 2px;
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--ink);
    }

    .nav-link {
      color: var(--ink-soft);
      font-size: var(--type-small);
      font-weight: 650;
      letter-spacing: 0.1em;
      text-decoration: none;
      text-transform: uppercase;
      transition: color 180ms ease;
    }

    .nav-link:hover { color: var(--amber); }

    .site-nav {
      display: flex;
      align-items: center;
      gap: clamp(9px, 1.5vw, 18px);
    }

    .nav-separator { color: var(--amber); font-size: var(--type-small); }

    .hero {
      min-height: calc(100svh - 92px);
      display: grid;
      grid-template-columns: minmax(0, 1.16fr) minmax(350px, 0.84fr);
      align-items: center;
      gap: clamp(36px, 6vw, 84px);
      padding-block: clamp(56px, 7vh, 96px);
    }

    .hero-content {
      max-width: 650px;
      justify-self: start;
      text-align: left;
    }

    .hero .eyebrow {
      justify-content: flex-start;
      margin-bottom: 24px;
    }

    .hero h1 {
      margin: 0 0 clamp(28px, 4vh, 42px);
      font-size: var(--type-display);
    }

    .hero-intro {
      max-width: 620px;
      padding-top: 24px;
      border-top: 1px solid var(--line);
    }

    .hero-lead {
      margin-bottom: 18px;
      color: var(--ink);
      font-size: var(--type-body);
      line-height: 1.48;
    }

    .hero-products {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .hero-products li {
      position: relative;
      padding: 13px 0 13px 26px;
      color: var(--ink-soft);
      font-size: var(--type-body);
      line-height: 1.6;
    }

    .hero-products li + li { border-top: 1px solid var(--line); }

    .hero-products li::before {
      content: "";
      position: absolute;
      left: 3px;
      top: 24px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--amber);
      box-shadow: 0 0 0 3px rgba(201, 120, 43, 0.16);
    }

    .hero-products strong {
      color: var(--ink);
      font-weight: 650;
    }

    .hero-products li span { color: var(--amber); }

    .hero-jump {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-top: 30px;
      padding-bottom: 6px;
      border-bottom: 1px solid currentColor;
      color: var(--amber-ink);
      font-size: var(--type-small);
      font-weight: 750;
      letter-spacing: 0.1em;
      text-decoration: none;
      text-transform: uppercase;
      transition: color 180ms ease;
    }

    .hero-jump span { font-size: var(--type-body); line-height: 1; }
    .hero-jump:hover { color: var(--ink); }
    .hero-jump:focus-visible { outline: 2px solid var(--amber-ink); outline-offset: 6px; }

    .eyebrow {
      display: flex;
      align-items: center;
      gap: 12px;
      margin: 0 0 28px;
      color: var(--amber-ink);
      font-size: var(--type-small);
      font-weight: 750;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 27px;
      height: 1px;
      background: currentColor;
    }

    h1, h2, h3, p { margin-top: 0; }

    h1 {
      max-width: 780px;
      margin-bottom: 30px;
      font-family: var(--serif);
      font-size: var(--type-display);
      font-weight: 400;
      letter-spacing: -0.055em;
      line-height: 0.94;
    }

    h1 em {
      color: var(--amber);
      font-weight: 400;
      font-style: italic;
    }

    .nowrap { white-space: nowrap; }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      padding-bottom: 5px;
      border-bottom: 1px solid rgba(40, 35, 31, 0.65);
      font-size: var(--type-body);
      font-weight: 700;
      letter-spacing: 0.03em;
      text-decoration: none;
      transition: gap 180ms ease, color 180ms ease, border-color 180ms ease;
    }

    .text-link:hover {
      gap: 18px;
      color: var(--amber);
      border-color: var(--amber);
    }

    .orbit-stage {
      position: relative;
      display: grid;
      place-items: center;
      aspect-ratio: 1;
      max-width: 510px;
      width: 100%;
      justify-self: center;
      isolation: isolate;
    }

    .orbit-stage::before {
      content: "";
      position: absolute;
      inset: 15%;
      z-index: -2;
      border-radius: 50%;
      background: rgba(231, 164, 88, 0.14);
      filter: blur(42px);
    }

    .orbit {
      position: absolute;
      border: 1px solid rgba(88, 70, 54, 0.17);
      border-radius: 50%;
    }

    .orbit.one { inset: 32%; border-color: rgba(201, 120, 43, 0.28); }
    .orbit.two { inset: 20%; }
    .orbit.three { inset: 7%; }

    .sun {
      position: relative;
      width: clamp(76px, 9vw, 116px);
      aspect-ratio: 1;
      border-radius: 50%;
      background:
        radial-gradient(circle at 35% 28%, #ffe4ad 0, #f3a94e 34%, #c76a21 76%, #a85219 100%);
      box-shadow:
        0 24px 55px rgba(173, 94, 29, 0.23),
        0 0 0 12px rgba(255, 249, 239, 0.48);
      transform: translate(var(--pull-x, 0), var(--pull-y, 0));
      transition: transform 450ms cubic-bezier(.2, .8, .2, 1);
    }

    .planet {
      --size: 11px;
      position: absolute;
      top: calc(50% - var(--size) / 2);
      left: calc(50% - var(--size) / 2);
      width: var(--size);
      height: var(--size);
      border-radius: 50%;
      background: var(--ink);
      box-shadow: 0 3px 9px rgba(40, 35, 31, 0.26);
    }

    .planet-a { animation: orbit-a 16s linear infinite; }
    .planet-b {
      --size: 8px;
      background: var(--amber);
      animation: orbit-b 11s linear infinite reverse;
    }

    @keyframes orbit-a {
      from { transform: rotate(0) translateX(clamp(138px, 18vw, 204px)) rotate(0); }
      to { transform: rotate(360deg) translateX(clamp(138px, 18vw, 204px)) rotate(-360deg); }
    }

    @keyframes orbit-b {
      from { transform: rotate(40deg) translateX(clamp(92px, 11.8vw, 135px)) rotate(-40deg); }
      to { transform: rotate(400deg) translateX(clamp(92px, 11.8vw, 135px)) rotate(-400deg); }
    }

    .section {
      padding-block: clamp(88px, 9vw, 128px);
      border-top: 1px solid var(--line);
    }

    .section-label {
      margin: 0 0 28px;
      color: var(--amber-ink);
      font-size: var(--type-small);
      font-weight: 750;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .mission-intro,
    .product-intro { text-align: center; }

    .mission-intro .section-label,
    .product-intro .section-label {
      display: inline-flex;
      align-items: center;
      gap: 12px;
    }

    .mission-intro .section-label::before,
    .mission-intro .section-label::after,
    .product-intro .section-label::before,
    .product-intro .section-label::after {
      content: "";
      width: 27px;
      height: 1px;
      background: currentColor;
    }

    h2 {
      margin-bottom: 36px;
      font-family: var(--serif);
      font-size: var(--type-heading);
      font-weight: 400;
      letter-spacing: -0.045em;
      line-height: 1.04;
    }

    .mission-motto {
      max-width: 700px;
      margin: 0 auto 30px;
      font-family: var(--serif);
      font-size: var(--type-heading);
      font-weight: 400;
      letter-spacing: -0.04em;
      line-height: 1.1;
    }

    .mission-motto span { display: block; }

    .mission-body {
      max-width: 700px;
      margin-inline: auto;
      text-align: left;
    }

    .mission-copy {
      margin-bottom: 0;
      color: var(--ink-soft);
      font-size: var(--type-body);
      line-height: 1.65;
    }

    .mission-copy + .mission-copy { margin-top: 24px; }

    .name-story {
      margin-top: clamp(56px, 6vw, 80px);
      text-align: center;
    }

    .name-statement {
      margin-bottom: 0;
      font-family: var(--serif);
      font-size: var(--type-lead);
      letter-spacing: -0.035em;
      line-height: 1.2;
    }

    .name-statement span { white-space: nowrap; }
    .name-statement em { color: var(--amber); font-weight: 400; }

    .name-gloss {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: clamp(40px, 8vw, 120px);
      max-width: 850px;
      margin: 28px auto 0;
    }

    .name-gloss p {
      max-width: 340px;
      margin: 0 auto;
      color: var(--ink-soft);
      font-size: var(--type-body);
      line-height: 1.65;
    }

    .name-gloss strong {
      display: block;
      margin-bottom: 8px;
      color: var(--amber-ink);
      font-size: var(--type-small);
      font-weight: 750;
      letter-spacing: 0.14em;
      text-transform: uppercase;
    }

    .product-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
      margin-top: clamp(38px, 4vw, 52px);
    }

    .product-intro .section-label { margin-bottom: 0; }

    .product-card {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      min-height: 374px;
      padding: clamp(30px, 4vw, 46px);
      border: 1px solid rgba(83, 61, 43, 0.10);
      border-radius: 22px;
      background: rgba(255, 250, 243, 0.7);
    }

    .product-icon {
      display: block;
      flex: none;
      align-self: center;
      width: 96px;
      height: 96px;
      margin-bottom: 28px;
      border-radius: 22px;
    }

    .product-card h3 {
      align-self: center;
      margin: 0 0 14px;
      font-family: var(--serif);
      font-size: var(--type-item);
      font-weight: 400;
      letter-spacing: -0.02em;
      text-align: center;
    }

    .product-description {
      max-width: 470px;
      margin-bottom: 22px;
      color: var(--ink-soft);
      font-size: var(--type-body);
      line-height: 1.7;
    }

    .product-description strong { color: var(--ink); font-weight: 750; }

    .product-points {
      margin: 0 0 30px;
      padding: 0;
      list-style: none;
    }

    .product-points li {
      position: relative;
      padding: 5px 0 5px 24px;
      color: var(--ink);
      font-size: var(--type-body);
      line-height: 1.6;
    }

    .product-points li::before {
      content: "";
      position: absolute;
      left: 3px;
      top: 15px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--amber);
      box-shadow: 0 0 0 3px rgba(201, 120, 43, 0.16);
    }

    .product-status {
      margin-top: auto;
      margin-bottom: 0;
      padding: 7px 13px;
      border: 1px solid rgba(201, 120, 43, 0.22);
      border-radius: 999px;
      color: #a66022;
      background: rgba(201, 120, 43, 0.07);
      font-size: var(--type-small);
      font-weight: 700;
      letter-spacing: 0.04em;
      line-height: 1.4;
    }

    .closing {
      position: relative;
      display: grid;
      place-items: center;
      min-height: 72svh;
      padding-block: 120px;
      border-top: 1px solid var(--line);
      text-align: center;
      overflow: hidden;
    }

    .closing .section-label {
      display: inline-flex;
      align-items: center;
      gap: 12px;
    }

    .closing .section-label::before,
    .closing .section-label::after {
      content: "";
      width: 27px;
      height: 1px;
      background: currentColor;
    }

    .closing::before,
    .closing::after {
      content: "";
      position: absolute;
      left: 50%;
      top: 50%;
      border: 1px solid rgba(201, 120, 43, 0.16);
      border-radius: 50%;
      transform: translate(-50%, -50%);
      pointer-events: none;
    }

    .closing::before { width: 520px; height: 520px; }
    .closing::after { width: 720px; height: 720px; opacity: 0.55; }

    .closing-inner { position: relative; z-index: 1; }

    .closing h2 {
      max-width: 860px;
      margin-inline: auto;
      margin-bottom: 28px;
    }

    .closing p {
      max-width: 620px;
      margin-inline: auto;
      color: var(--ink-soft);
      font-size: var(--type-body);
    }

    footer {
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 108px;
      border-top: 1px solid var(--line);
      color: var(--ink-soft);
      font-size: var(--type-small);
      letter-spacing: 0.04em;
      text-align: center;
    }

    .footer-line { margin: 0; line-height: 1.8; }

    @media (max-width: 820px) {
      :root {
        --type-display: clamp(52px, 16vw, 82px);
        --type-heading: clamp(40px, 6vw, 52px);
      }
      .shell { width: min(calc(100% - 32px), 680px); }
      .site-header { height: 76px; }

      .hero {
        grid-template-columns: 1fr;
        min-height: calc(100svh - 76px);
        padding-block: 54px 35px;
      }

      .hero-content {
        position: relative;
        z-index: 2;
        justify-self: stretch;
        text-align: left;
      }
      .hero .eyebrow { justify-content: flex-start; }
      .hero h1 { margin-inline: 0; }
      .hero-intro { max-width: 680px; }
      .orbit-stage {
        width: min(70vw, 320px);
        margin: -12px auto 0;
        justify-self: center;
      }

      .name-gloss { grid-template-columns: 1fr; gap: 24px; }
      .name-gloss p { max-width: 420px; }
      .product-grid { grid-template-columns: 1fr; }
      .product-card { min-height: 0; }
      .closing::before { width: 400px; height: 400px; }
      .closing::after { width: 580px; height: 580px; }
    }

    @media (max-width: 520px) {
      :root {
        --type-display: clamp(47px, 14vw, 66px);
        --type-heading: clamp(36px, 9vw, 44px);
        --type-item: 26px;
        --type-lead: 30px;
        --type-body: 17px;
        --type-small: 12px;
      }
      .nav-link { letter-spacing: 0.05em; }
      .site-nav { gap: 7px; }
      .brand { gap: 7px; }
      .hero { padding-top: 56px; }
      .orbit-stage { width: min(66vw, 270px); }
      .name-statement span { display: block; white-space: normal; }
      footer { min-height: 124px; }
    }

    @media (max-width: 430px) {
      .shell { width: calc(100% - 24px); }
      .site-header { height: auto; min-height: 92px; flex-wrap: wrap; padding-block: 14px; row-gap: 5px; }
      .brand { white-space: nowrap; }
      .site-nav { width: 100%; justify-content: flex-end; }
    }

    @media (max-width: 360px) {
      :root { --type-heading: 32px; }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }