/* 傲杭官网 — 基于 Modernist 设计系统（平面、直角、2px 分隔线、单一红色强调色）。
   为兼容国内部分 WebView 内核，半透明色统一用 rgba 预先计算，不依赖 color-mix()。 */

@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/archivo-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201e1d;
  --color-accent: #ec3013;
  --color-accent-600: #dd2b0f;
  --color-accent-700: #ae1800;
  --color-neutral-700: #605d5d;
  --color-divider: rgba(32, 30, 29, 0.4);
  --text-82: rgba(32, 30, 29, 0.82);
  --text-78: rgba(32, 30, 29, 0.78);
  --text-70: rgba(32, 30, 29, 0.7);
  --tint-4: rgba(32, 30, 29, 0.04);
  --tint-7: rgba(32, 30, 29, 0.07);
  --tint-14: rgba(32, 30, 29, 0.14);

  --font: "Archivo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  --gutter: clamp(20px, 5vw, 72px);
  --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--color-bg); color: var(--color-text);
  font-family: var(--font); font-size: 15px; line-height: 1.55; text-wrap: pretty;
}
h1, h2, h3 { margin: 0; font-family: var(--font); font-weight: 900; }
p { margin: 0; }
a { color: var(--color-accent-700); text-underline-offset: 3px; }
a:hover { color: var(--color-accent); }
svg { display: block; flex: none; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: rgba(236, 48, 19, 0.3); }
[hidden] { display: none !important; }
.container { max-width: var(--max); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--color-text); color: var(--color-bg); padding: 8px 12px; }
.skip-link:focus { left: 8px; }

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: flex-start; gap: 10px;
  cursor: pointer; text-decoration: none; font: inherit; font-weight: 800;
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent; border-radius: 0;
  padding: 8px 14px;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-accent-600); color: var(--color-bg); }
.btn-primary:active { background: var(--color-accent-700); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: var(--tint-7); color: var(--color-text); }
.btn-secondary:active { background: var(--tint-14); }
.btn-lg { min-height: 48px; padding: 0 20px; font-size: 15px; }
.btn-icon { width: 40px; height: 40px; padding: 0; justify-content: center; }

/* — header — */
.site-header { position: sticky; top: 0; z-index: 30; background: var(--color-bg); border-bottom: 2px solid var(--color-divider); }
.header-bar { display: flex; align-items: center; gap: 28px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; text-decoration: none; color: var(--color-text); }
.brand:hover { color: var(--color-text); }
.brand-mark { width: 14px; height: 14px; background: var(--color-accent); flex: none; }
.brand-zh { font-weight: 900; font-size: 19px; letter-spacing: -0.01em; }
.brand-en { font-weight: 800; font-size: 15px; letter-spacing: 0.08em; }
.nav-desktop { display: flex; align-items: center; gap: 28px; }
.nav-link {
  text-decoration: none; font-size: 15px; font-weight: 600; color: var(--color-text);
  padding: 4px 0; border-bottom: 2px solid transparent;
}
.nav-link:hover, .nav-link.is-active { color: var(--color-accent-700); }
.nav-desktop .nav-link.is-active { border-bottom-color: var(--color-accent); }
.lang-switch { display: flex; border: 1px solid var(--color-divider); }
.lang-switch button {
  font: inherit; font-size: 13px; font-weight: 700; padding: 6px 10px; border: 0; cursor: pointer;
  background: transparent; color: var(--color-text);
}
.lang-switch button + button { border-left: 1px solid var(--color-divider); }
.lang-switch button:hover { background: var(--tint-7); }
.lang-switch button[aria-pressed="true"] { background: var(--color-text); color: var(--color-bg); }
.menu-toggle { display: none; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }
.nav-mobile { border-top: 2px solid var(--color-divider); padding-bottom: 20px; flex-direction: column; display: flex; }
.nav-mobile .nav-link {
  display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 800;
  padding: 18px 0; border-bottom: 1px solid var(--color-divider);
}
.nav-mobile .num { font-size: 13px; font-weight: 700; color: var(--color-neutral-700); font-feature-settings: "tnum"; }
.nav-mobile .btn { margin-top: 20px; width: 100%; }

@media (max-width: 859px) {
  .nav-desktop, .header-cta { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-bar { gap: 16px; }
}
@media (min-width: 860px) {
  .nav-mobile { display: none !important; }
}

/* — shared section heads — */
.kicker { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent-700); margin-bottom: 14px; font-weight: 600; }
.section-title { font-size: clamp(30px, 4vw, 48px); line-height: 1.1; letter-spacing: -0.02em; }
.section-head { display: flex; flex-wrap: wrap; gap: 20px 64px; align-items: flex-end; margin-bottom: 48px; }
.section-head > div, .section-head > p { flex: 1 1 360px; }
.lead { font-size: 16px; line-height: 1.75; color: var(--text-78); }
.label-sm { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; color: var(--color-accent-700); margin-bottom: 10px; }
section[id] { scroll-margin-top: 72px; }

/* — hero — */
.hero { padding: clamp(64px, 11vw, 140px) 0 clamp(56px, 8vw, 104px); }
.hero h1 { font-size: clamp(40px, 7vw, 92px); line-height: 1.06; letter-spacing: -0.025em; margin-left: -0.04em; }
.hero h1 > span { display: block; }
.hero h1 .mark { color: var(--color-accent); }
.hero-sub { font-size: clamp(16px, 1.5vw, 18px); line-height: 1.75; max-width: 60ch; margin-top: clamp(28px, 4vw, 44px); color: var(--text-82); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.meta-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  border-top: 2px solid var(--color-divider); border-bottom: 2px solid var(--color-divider);
}
.meta-grid > div { padding: 24px 24px 24px 0; }
.meta-k { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-70); margin-bottom: 8px; }
.meta-v { font-weight: 800; font-size: 22px; line-height: 1.2; overflow-wrap: anywhere; }

/* — services accordion — */
.services { padding: clamp(72px, 9vw, 120px) 0 clamp(56px, 7vw, 96px); }
.svc-list { border-bottom: 2px solid var(--color-divider); }
.svc { border-top: 2px solid var(--color-divider); }
.svc-head {
  width: 100%; display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 32px; padding: 28px 0;
  background: transparent; border: 0; font: inherit; color: inherit; text-align: left; cursor: pointer;
}
.svc-head:hover { background: var(--tint-4); }
.svc-num { flex: 0 0 56px; font-weight: 800; font-size: 15px; font-feature-settings: "tnum"; }
.svc-title { flex: 1 1 220px; font-weight: 900; font-size: clamp(22px, 2.4vw, 30px); line-height: 1.2; letter-spacing: -0.01em; }
.svc-desc { flex: 2 1 300px; font-size: 15.5px; line-height: 1.75; color: var(--text-78); }
.svc-icon {
  flex: 0 0 36px; height: 36px; display: flex; align-items: center; justify-content: center; align-self: center;
  border: 1px solid var(--color-divider);
}
.svc-icon svg { transition: transform 200ms; }
.svc-head[aria-expanded="true"] .svc-num { color: var(--color-accent-700); }
.svc-head[aria-expanded="true"] .svc-icon { background: var(--color-accent); color: var(--color-bg); }
.svc-head[aria-expanded="true"] .svc-icon svg { transform: rotate(45deg); }
.svc-body {
  padding: 0 0 36px 88px; display: grid; gap: 28px 48px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}
@media (max-width: 639px) { .svc-body { padding-left: 0; } }
.scope-item { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px solid var(--color-divider); font-size: 15px; }
.scope-item::before { content: ""; width: 8px; height: 8px; background: var(--color-accent); flex: none; }
.svc-fit { padding-top: 12px; border-top: 1px solid var(--color-divider); font-size: 15px; line-height: 1.75; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .svc-icon svg { transition: none; } }

/* — process — */
.process { padding: clamp(40px, 5vw, 64px) 0 clamp(72px, 9vw, 120px); }
.steps {
  list-style: none; margin: 0; padding: 2px 0; display: grid; gap: 2px; background: var(--color-divider);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
}
.steps li { background: var(--color-bg); padding: 28px 24px 32px 0; display: flex; flex-direction: column; gap: 12px; min-height: 220px; }
.step-n { font-weight: 800; font-size: 44px; line-height: 1; color: var(--color-accent); font-feature-settings: "tnum"; }
.step-title { font-weight: 800; font-size: 20px; line-height: 1.25; margin-top: auto; }
.step-desc { font-size: 14.5px; line-height: 1.7; color: var(--text-78); }

/* — poster — */
.poster { background: var(--color-accent); color: var(--color-bg); }
.poster .container { padding-top: clamp(72px, 9vw, 120px); padding-bottom: clamp(72px, 9vw, 120px); }
.poster h2 { font-size: clamp(36px, 5.4vw, 72px); line-height: 1.08; letter-spacing: -0.02em; margin-left: -0.04em; }
.poster h2 > span { display: block; }
.btn-poster { margin-top: 40px; color: var(--color-bg); border-color: var(--color-bg); }
.btn-poster:hover { background: var(--color-accent-600); color: var(--color-bg); }
.btn-poster:active { background: var(--color-accent-700); }
.btn-poster:focus-visible { outline-color: var(--color-bg); }

/* — contact — */
.contact {
  padding-top: clamp(72px, 9vw, 120px); padding-bottom: clamp(72px, 9vw, 120px);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: 48px clamp(40px, 6vw, 96px);
}
.contact .section-title { margin-bottom: 20px; }
.contact .lead { margin-bottom: 36px; }
.info { border-top: 2px solid var(--color-divider); }
.info-row { display: flex; flex-wrap: wrap; gap: 4px 24px; padding: 18px 0; border-bottom: 1px solid var(--color-divider); }
.info-k { flex: 0 0 96px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-70); padding-top: 3px; }
.info-v { font-weight: 700; font-size: 17px; }

.form {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 20px 16px;
  border-top: 2px solid var(--color-divider); padding-top: 28px;
}
.full { grid-column: 1 / -1; }
.field label, .legend { display: block; font-size: 12px; margin-bottom: 5px; color: var(--text-70); padding: 0; }
.legend { margin-bottom: 10px; }
.input {
  width: 100%; min-height: 44px; padding: 8px 10px; font: inherit; font-size: 15px;
  color: var(--color-text); caret-color: var(--color-accent); background: var(--color-surface);
  border: 1px solid var(--color-divider); border-radius: 0; -webkit-appearance: none; appearance: none;
}
.input:hover { border-color: rgba(32, 30, 29, 0.45); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea.input { min-height: 120px; resize: vertical; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.radios { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 160px), 1fr)); gap: 12px 16px; }
.radio { position: relative; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; min-height: 32px; }
.radio input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.radio .dot { width: 16px; height: 16px; flex: none; border-radius: 50%; border: 1.5px solid var(--color-divider); }
.radio:hover .dot { border-color: var(--color-accent); }
.radio input:checked + .dot { border-color: var(--color-accent); background: var(--color-accent); box-shadow: inset 0 0 0 4px var(--color-bg); }
.radio input:focus-visible + .dot { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.captcha { display: flex; gap: 12px; align-items: stretch; }
.captcha .input { flex: 1 1 auto; min-width: 0; max-width: 220px; text-transform: uppercase; letter-spacing: 0.2em; font-weight: 700; }
.captcha-img {
  flex: none; width: 150px; height: 50px; padding: 0; cursor: pointer;
  border: 1px solid var(--color-divider); border-radius: 0; background: var(--color-surface);
}
.captcha-img:hover { border-color: var(--color-accent); }
.captcha-img img { display: block; width: 100%; height: 100%; }
.captcha-img img:not([src]) { visibility: hidden; }
.captcha-hint { font-size: 12px; color: var(--text-70); margin-top: 6px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.btn-submit { min-width: 200px; justify-content: space-between; }
.form-error { color: var(--color-accent-700); font-size: 14px; line-height: 1.6; margin-top: 12px; }

.sent { border-top: 2px solid var(--color-divider); padding-top: 28px; display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.sent-icon { width: 44px; height: 44px; background: var(--color-accent); color: var(--color-bg); display: flex; align-items: center; justify-content: center; }
.sent h3 { font-size: 28px; }
.sent p { font-size: 16px; line-height: 1.75; color: var(--text-82); }

/* — footer — */
.site-footer { border-top: 2px solid var(--color-divider); }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 8px 32px; justify-content: space-between;
  padding-top: 28px; padding-bottom: 28px; font-size: 13px; line-height: 1.7; color: var(--text-70);
}
.footer-inner a { color: inherit; text-decoration: none; }
.footer-inner a:hover { color: var(--color-accent-700); text-decoration: underline; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 4px 24px; }

/* — 404 — */
.notfound { padding: clamp(64px, 11vw, 140px) 0; }
.notfound h1 { font-size: clamp(40px, 7vw, 92px); line-height: 1.06; letter-spacing: -0.025em; }
.notfound p { margin: 24px 0 32px; font-size: 17px; line-height: 1.75; color: var(--text-82); }