/* =========================================================================
   高岩科技官网 · site layout
   依赖 colors_and_type.css (tokens) + responsive.css (适配兜底)
   遵循 Design System v6.6：蓝主导 / 青点缀≤4 / 零阴影 / 1px 边框 / 无左边框卡
   ========================================================================= */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; overflow-x: hidden; -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

/* ----- i18n 三语切换：默认中文，html[data-lang] 切 en / ja ----- */
.i18n-en, .i18n-ja { display: none; }
html[data-lang="en"] .i18n-zh, html[data-lang="en"] .i18n-ja { display: none; }
html[data-lang="en"] .i18n-en { display: revert; }
html[data-lang="ja"] .i18n-zh, html[data-lang="ja"] .i18n-en { display: none; }
html[data-lang="ja"] .i18n-ja { display: revert; }

/* 日文字体栈：避免用中文字形渲染日文汉字/假名（YaHei 会显示简体字形） */
html[data-lang="ja"] {
  --gy-font-display-cn: "Yu Gothic UI", "Yu Gothic", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Meiryo", "Noto Sans JP", sans-serif;
  --gy-font-body: "Yu Gothic UI", "Yu Gothic", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Meiryo", "Noto Sans JP", sans-serif;
}

/* ----- layout primitives ----- */
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 48px; }
.section { padding: 104px 0; }
.section--alt { background: var(--gy-bg-alt); }
.section--deep { background: var(--gy-blue-900); color: #fff; }
.eyebrow {
  font-family: var(--gy-font-display-en); font-weight: 700;
  font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gy-blue-500); display: inline-flex; align-items: center; gap: 10px;
  margin: 0 0 18px;
}
.eyebrow::before { content: ""; width: 28px; height: 3px; background: var(--gy-cyan-400); }
.section--deep .eyebrow { color: var(--gy-cyan-400); }
.section--deep .eyebrow::before { background: var(--gy-cyan-400); }
.sec-title {
  font-family: var(--gy-font-display-cn); font-weight: 700;
  font-size: clamp(28px, 4vw, 44px); line-height: 1.2; letter-spacing: -0.01em;
  color: var(--gy-ink); margin: 0 0 16px;
}
.section--deep .sec-title { color: #fff; }
.sec-lead {
  font-size: 18px; line-height: 1.75; color: var(--gy-fg-2);
  max-width: 760px; margin: 0;
}
.section--deep .sec-lead { color: rgba(255,255,255,0.8); }
.sec-head { margin-bottom: 56px; }

/* ----- buttons ----- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--gy-font-body); font-weight: 700; font-size: 15px;
  padding: 13px 26px; border-radius: var(--gy-radius-md); border: 1px solid transparent;
  cursor: pointer; transition: background var(--gy-dur-base) var(--gy-ease),
              color var(--gy-dur-base) var(--gy-ease), border-color var(--gy-dur-base) var(--gy-ease);
  white-space: nowrap;
}
.btn-primary { background: var(--gy-blue-500); color: #fff; }
.btn-primary:hover { background: var(--gy-blue-600); }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost { background: transparent; color: var(--gy-blue-500); border-color: var(--gy-grey-300); }
.btn-ghost:hover { border-color: var(--gy-blue-500); }
.section--deep .btn-ghost,
.hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.35); }
.section--deep .btn-ghost:hover,
.hero .btn-ghost:hover { border-color: var(--gy-cyan-400); color: var(--gy-cyan-400); }
.btn-cyan { background: var(--gy-cyan-400); color: var(--gy-blue-900); }
.btn-cyan:hover { background: var(--gy-cyan-300); }

/* =========================================================================
   NAV
   ========================================================================= */
.nav {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(160%) blur(8px); border-bottom: 1px solid var(--gy-border);
}
.nav__inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.nav__logo { display: flex; align-items: center; }
.nav__logo svg { height: 80px; width: 120px; }
.nav__links { display: flex; gap: 26px; margin-left: auto; }
.nav__links a {
  font-size: 15px; font-weight: 500; color: var(--gy-fg-2); padding: 6px 0;
  border-bottom: 2px solid transparent; transition: color var(--gy-dur-fast) var(--gy-ease);
}
.nav__links a:hover { color: var(--gy-blue-500); }
.nav__actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
  display: inline-flex; align-items: center; font-family: var(--gy-font-mono);
  font-size: 13px; font-weight: 600; border: 1px solid var(--gy-grey-300);
  border-radius: var(--gy-radius-sm); overflow: hidden; background: #fff;
}
.lang-toggle button {
  border: 0; background: transparent; padding: 6px 11px; cursor: pointer;
  color: var(--gy-fg-3); font: inherit; transition: background var(--gy-dur-fast), color var(--gy-dur-fast);
}
.lang-toggle button.active { background: var(--gy-blue-500); color: #fff; }
.nav__cta { padding: 9px 18px; font-size: 14px; }
.nav__burger { display: none; border: 0; background: transparent; cursor: pointer; padding: 6px; }
.nav__burger svg { width: 26px; height: 26px; stroke: var(--gy-ink); }

/* =========================================================================
   HERO
   ========================================================================= */
.hero { position: relative; background: var(--gy-blue-900); color: #fff; overflow: hidden; }
.hero__sg {
  position: absolute; left: -6%; bottom: -22%; width: 42%; max-width: 560px;
  opacity: 0.16; pointer-events: none; z-index: 1;
}
.hero__inner { position: relative; z-index: 2; padding: 116px 0 96px; }
.hero__eyebrow {
  font-family: var(--gy-font-display-en); font-weight: 700; font-size: 13px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--gy-cyan-400);
  display: inline-flex; align-items: center; gap: 12px; margin-bottom: 28px;
}
.hero__eyebrow::before { content: ""; width: 34px; height: 3px; background: var(--gy-cyan-400); }
.hero__title {
  font-family: var(--gy-font-display-cn); font-weight: 700;
  font-size: clamp(40px, 6.6vw, 86px); line-height: 1.08; letter-spacing: -0.02em;
  margin: 0 0 24px;
}
.hero__title .accent { color: var(--gy-cyan-400); }
.hero__sub { font-size: clamp(17px, 1.6vw, 21px); line-height: 1.7; color: rgba(255,255,255,0.82); max-width: 640px; margin: 0 0 40px; }
.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* hero stats strip */
.hero__stats {
  position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255,255,255,0.16);
}
.hero__stat { padding: 34px 0 40px; }
.hero__stat + .hero__stat { border-left: 1px solid rgba(255,255,255,0.16); padding-left: 32px; }
.hero__stat .num {
  font-family: var(--gy-font-display-en); font-weight: 700; font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1; letter-spacing: -0.02em; color: #fff;
}
.hero__stat .num b { color: var(--gy-cyan-400); font-weight: 700; }
.hero__stat .lbl { font-size: 14px; color: rgba(255,255,255,0.7); margin-top: 12px; line-height: 1.5; }

/* =========================================================================
   ABOUT — pillars
   ========================================================================= */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.pillar {
  background: #fff; border: 1px solid var(--gy-border); border-top: 3px solid var(--gy-blue-500);
  border-radius: var(--gy-radius-lg); padding: 32px 28px;
}
.pillar .pico { width: 44px; height: 44px; color: var(--gy-blue-500); margin-bottom: 18px; }
.pillar h3 { font-family: var(--gy-font-display-cn); font-weight: 700; font-size: 22px; margin: 0 0 8px; color: var(--gy-ink); }
.pillar .en { font-family: var(--gy-font-display-en); font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gy-fg-3); margin-bottom: 14px; }
.pillar p { margin: 0; font-size: 15px; line-height: 1.7; color: var(--gy-fg-2); }

/* =========================================================================
   PRODUCTS
   ========================================================================= */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.prod-card {
  background: #fff; border: 1px solid var(--gy-border); border-radius: var(--gy-radius-lg);
  padding: 30px 26px; transition: border-color var(--gy-dur-base) var(--gy-ease), transform var(--gy-dur-base) var(--gy-ease);
}
.prod-card:hover { border-color: var(--gy-blue-300); transform: translateY(-4px); }
.prod-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.prod-card__ico {
  width: 48px; height: 48px; border-radius: var(--gy-radius-md); background: var(--gy-blue-50);
  color: var(--gy-blue-500); display: flex; align-items: center; justify-content: center;
}
.prod-card__ico svg { width: 26px; height: 26px; }
.prod-card__no { font-family: var(--gy-font-display-en); font-weight: 700; font-size: 30px; color: var(--gy-grey-200); letter-spacing: -0.02em; }
.prod-card h3 { font-family: var(--gy-font-display-cn); font-weight: 700; font-size: 21px; margin: 0 0 4px; color: var(--gy-ink); }
.prod-card .en { font-family: var(--gy-font-display-en); font-size: 12.5px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--gy-fg-3); margin-bottom: 14px; }
.prod-card p { margin: 0 0 16px; font-size: 14.5px; line-height: 1.7; color: var(--gy-fg-2); }
.prod-card .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.prod-card .tags span {
  font-size: 12.5px; color: var(--gy-blue-700); background: var(--gy-blue-50);
  border-radius: var(--gy-radius-pill); padding: 4px 12px;
}

/* data moat */
.moat { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 64px;
        border: 1px solid var(--gy-border); border-radius: var(--gy-radius-lg); overflow: hidden; background: #fff; }
.moat__item { padding: 36px 28px; position: relative; }
.moat__item + .moat__item { border-left: 1px solid var(--gy-border); }
.moat__badge {
  font-family: var(--gy-font-mono); font-size: 11px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--gy-cyan-600); text-transform: uppercase; margin-bottom: 12px;
}
.moat__num { font-family: var(--gy-font-display-en); font-weight: 700; font-size: 38px; line-height: 1; color: var(--gy-blue-500); letter-spacing: -0.02em; }
.moat__lbl { font-size: 14px; line-height: 1.6; color: var(--gy-fg-2); margin-top: 12px; }

/* =========================================================================
   CREDENTIALS
   ========================================================================= */
.cred-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cred-card {
  background: #fff; border: 1px solid var(--gy-border); border-radius: var(--gy-radius-lg);
  padding: 30px 26px; border-top: 3px solid var(--gy-cyan-400);
}
.cred-card h3 { font-family: var(--gy-font-display-cn); font-weight: 700; font-size: 20px; margin: 0 0 6px; color: var(--gy-ink); }
.cred-card .en { font-family: var(--gy-font-display-en); font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--gy-fg-3); margin-bottom: 16px; }
.cred-card p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--gy-fg-2); }
.cred-card .cnt { font-family: var(--gy-font-display-en); font-weight: 700; font-size: 15px; color: var(--gy-blue-500); margin-top: 16px; }
.cred-note { margin-top: 28px; font-family: var(--gy-font-mono); font-size: 12.5px; color: var(--gy-fg-3); }

/* ----- logo wall（Trusted by teams at · 深蓝 band，客户真名背书）----- */
/* 客户 logo 统一刷白单色（brightness(0) invert(1)），不露品牌原色；hover 仅提亮不变彩 */
.logo-wall {
  background: var(--gy-blue-900); border: 1px solid var(--gy-blue-900);
  border-radius: var(--gy-radius-lg); overflow: hidden; padding: 46px 40px 50px;
}
.logo-wall__label {
  font-family: var(--gy-font-display-en); font-weight: 700; font-size: 12px;
  letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.5);
  text-align: center; margin: 0 0 38px;
  display: flex; align-items: center; justify-content: center; gap: 16px;
}
.logo-wall__label::before, .logo-wall__label::after {
  content: ""; height: 1px; width: 40px; background: rgba(255,255,255,0.18);
}
.logo-wall__grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px;
  background: rgba(255,255,255,0.10); border: 1px solid rgba(255,255,255,0.10);
}
.logo-wall__item {
  --lw-base: 36px;
  background: var(--gy-blue-900); display: flex; align-items: center; justify-content: center;
  padding: 24px 20px; min-height: 92px;
}
.logo-wall__item img {
  max-height: calc(var(--lw-base, 36px) * var(--lw-k, 1)); max-width: var(--lw-mw, 100%); width: auto; object-fit: contain;
  filter: brightness(0) invert(1); opacity: 0.66;
  transition: opacity var(--gy-dur-base) var(--gy-ease);
}
.logo-wall__item:hover img { opacity: 1; }
@media (max-width: 1024px) { .logo-wall__grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 760px) {
  .logo-wall { padding: 34px 22px 38px; }
  .logo-wall__grid { grid-template-columns: repeat(3, 1fr); }
  .logo-wall__item { padding: 20px 14px; min-height: 78px; --lw-base: 30px; }
}
@media (max-width: 420px) { .logo-wall__grid { grid-template-columns: repeat(2, 1fr); } }

/* 光学配平：让整体视觉大小协调（非统一字号）。宽 wordmark 受宽度约束横向霸屏 → 收窄 max-width（%，响应式安全）；
   紧凑/多行 logo 偏小 → 用 --lw-k 适度放大。逐项肉眼调。 */
.logo-wall__item img[src*="nestle"]      { --lw-mw: 70%; }
.logo-wall__item img[src*="ecolab"]      { --lw-mw: 78%; }
.logo-wall__item img[src*="givaudan"]    { --lw-mw: 80%; }
.logo-wall__item img[src*="fonterra"]    { --lw-mw: 84%; }
.logo-wall__item img[src*="kraft-heinz"] { --lw-mw: 84%; }
.logo-wall__item img[src*="mondelez"]    { --lw-mw: 86%; }
.logo-wall__item img[src*="lesaffre"]    { --lw-mw: 88%; }
.logo-wall__item img[src*="lamb-weston"] { --lw-mw: 92%; }
.logo-wall__item img[src*="hormel"]      { --lw-mw: 90%; }
.logo-wall__item img[src*="unilever-fs"] { --lw-k: 1.18; }
.logo-wall__item img[src*="mccormick"]   { --lw-k: 1.08; }

/* =========================================================================
   TEAM
   ========================================================================= */
.team-band { margin-bottom: 40px; }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.team-grid--founders { grid-template-columns: repeat(3, 1fr); }
.member {
  background: #fff; border: 1px solid var(--gy-border); border-radius: var(--gy-radius-lg);
  padding: 28px 24px; display: flex; flex-direction: column;
}
.member__head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.member__avatar {
  width: 58px; height: 58px; border-radius: 50%; background: var(--gy-blue-900); color: var(--gy-cyan-400);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; overflow: hidden;
  font-family: var(--gy-font-display-en); font-weight: 700; font-size: 20px;
  border: 1px solid var(--gy-grey-200);
}
.member__avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.member__name { font-family: var(--gy-font-display-cn); font-weight: 700; font-size: 19px; color: var(--gy-ink); line-height: 1.2; }
.member__en { font-family: var(--gy-font-display-en); font-size: 12.5px; color: var(--gy-fg-3); letter-spacing: 0.03em; margin-top: 3px; }
.member__role {
  display: inline-block; font-size: 13px; font-weight: 600; color: var(--gy-blue-700);
  background: var(--gy-blue-50); border-radius: var(--gy-radius-sm); padding: 5px 12px; margin-bottom: 16px; align-self: flex-start;
}
.member__bio { margin: 0; }
.member__bio li {
  position: relative; padding-left: 16px; font-size: 13.5px; line-height: 1.6; color: var(--gy-fg-2); margin-bottom: 8px;
}
.member__bio li::before { content: ""; position: absolute; left: 0; top: 9px; width: 5px; height: 5px; background: var(--gy-blue-500); border-radius: 50%; }

/* =========================================================================
   CONTACT + DEMO
   ========================================================================= */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: start; }
.contact-info .ci-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,0.14); }
.contact-info .ci-item:first-of-type { padding-top: 4px; }
.ci-ico { width: 22px; height: 22px; color: var(--gy-cyan-400); flex-shrink: 0; margin-top: 2px; }
.ci-k { font-family: var(--gy-font-display-en); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.55); margin-bottom: 6px; }
.ci-v { font-size: 16px; color: #fff; line-height: 1.5; }
.ci-v a:hover { color: var(--gy-cyan-400); }
.qr-box { margin-top: 28px; display: flex; align-items: center; gap: 18px; }
.qr-box img, .qr-box .qr-ph {
  width: 108px; height: 108px; border-radius: var(--gy-radius-md); background: #fff; padding: 6px; flex-shrink: 0;
}
.qr-ph { display: flex; align-items: center; justify-content: center; color: var(--gy-grey-400); font-size: 11px; text-align: center; border: 1px dashed var(--gy-grey-300); }
.qr-box .qr-cap { font-size: 14px; color: rgba(255,255,255,0.75); line-height: 1.6; }

.form-card { background: #fff; border-radius: var(--gy-radius-lg); padding: 36px 34px; color: var(--gy-ink); }
.form-card h3 { font-family: var(--gy-font-display-cn); font-weight: 700; font-size: 24px; margin: 0 0 6px; }
.form-card .fc-sub { font-size: 14px; color: var(--gy-fg-3); margin: 0 0 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--gy-fg-2); margin-bottom: 7px; }
.field label .req { color: var(--gy-blue-500); }
.field input, .field select, .field textarea {
  width: 100%; font-family: var(--gy-font-body); font-size: 15px; color: var(--gy-ink);
  padding: 12px 14px; border: 1px solid var(--gy-grey-300); border-radius: var(--gy-radius-sm);
  background: var(--gy-grey-50); transition: border-color var(--gy-dur-fast), background var(--gy-dur-fast);
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--gy-blue-500); background: #fff; box-shadow: var(--gy-focus-ring);
}
.form-card .btn-primary { width: 100%; justify-content: center; padding: 15px; font-size: 16px; margin-top: 6px; }
.form-note { font-size: 12px; color: var(--gy-fg-3); margin: 14px 0 0; line-height: 1.6; text-align: center; }
.form-ok { display: none; padding: 18px; border-radius: var(--gy-radius-md); background: var(--gy-cyan-50); border: 1px solid var(--gy-cyan-200); color: var(--gy-cyan-700); font-size: 14px; margin-bottom: 18px; }
.form-ok.show { display: block; }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer { background: #060f29; color: rgba(255,255,255,0.7); padding: 64px 0 36px; }
.footer__top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer__brand svg { height: 38px; width: 38px; margin-bottom: 18px; }
.footer__slogan { font-family: var(--gy-font-display-cn); font-weight: 500; letter-spacing: 0.1em; color: var(--gy-cyan-400); font-size: 18px; }
.footer__nav { display: flex; gap: 56px; flex-wrap: wrap; }
.footer__col h4 { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.5); margin: 0 0 16px; font-family: var(--gy-font-display-en); }
.footer__col a { display: block; font-size: 14px; color: rgba(255,255,255,0.72); margin-bottom: 11px; }
.footer__col a:hover { color: var(--gy-cyan-400); }
.footer__bot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 28px; font-family: var(--gy-font-mono); font-size: 12.5px; color: rgba(255,255,255,0.5); }

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width: 1024px) {
  .prod-grid, .cred-grid, .team-grid { grid-template-columns: repeat(2, 1fr); }
  .moat { grid-template-columns: repeat(2, 1fr); }
  .moat__item:nth-child(3) { border-left: 0; }
  .moat__item:nth-child(n+3) { border-top: 1px solid var(--gy-border); }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 860px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: block; }
  .nav.open .nav__links {
    display: flex; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column;
    background: #fff; border-bottom: 1px solid var(--gy-border); padding: 12px 40px 20px; gap: 6px;
  }
  .nav.open .nav__links a { padding: 12px 0; border-bottom: 1px solid var(--gy-grey-100); }
}
@media (max-width: 760px) {
  .wrap { padding: 0 22px; }
  .section { padding: 68px 0; }
  .pillars, .prod-grid, .cred-grid, .team-grid, .team-grid--founders { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .hero__stat { padding: 24px 0; }
  .hero__stat + .hero__stat { border-left: 0; padding-left: 0; }
  .hero__stat:nth-child(2) { border-left: 1px solid rgba(255,255,255,0.16); padding-left: 24px; }
  .hero__stat:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,0.16); }
  .hero__stat:nth-child(4) { border-left: 1px solid rgba(255,255,255,0.16); padding-left: 24px; }
  .moat { grid-template-columns: 1fr; }
  .moat__item + .moat__item { border-left: 0; border-top: 1px solid var(--gy-border); }
  .form-row { grid-template-columns: 1fr; }
  .footer__top { flex-direction: column; }
  /* 客户成功两卡用了 inline grid-template-columns，需 !important 覆盖才能在手机端单列 */
  .team-grid[style] { grid-template-columns: 1fr !important; }
}

/* ---- 小屏精修：3 语言 toggle 收窄 / 安全区 / CTA 竖排 / 触控目标 ---- */
@media (max-width: 480px) {
  .wrap { padding-left: max(18px, env(safe-area-inset-left)); padding-right: max(18px, env(safe-area-inset-right)); }
  .nav__inner { gap: 12px; }
  .nav__logo svg { height: 70px; width: 105px; }
  .lang-toggle button { padding: 6px 9px; font-size: 12px; }
  .nav.open .nav__links { padding-left: 18px; padding-right: 18px; }
  .hero__inner { padding: 92px 0 70px; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { justify-content: center; }
  .sec-head { margin-bottom: 40px; }
  .form-card { padding: 28px 20px; }
  .contact-grid { gap: 28px; }
  .footer__bot { flex-direction: column; gap: 8px; }
}

/* =========================================================================
   Design Polish v2 — 四方设计评审综合（Canvas / Lovart / Figma / Linear-Stripe）
   原则：零阴影 · token 化动效 · 青≤4/屏 · 冷品牌克制 · prefers-reduced-motion 兜底
   ========================================================================= */

/* --- 0) reduced-motion 兜底（任何动效前置必做）--- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important; animation-delay: 0 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* --- 1) 滚动揭示（Linear/Stripe P0）：克制 rise+fade，一次性 --- */
[data-reveal] {
  opacity: 0; transform: translateY(16px);
  transition: opacity var(--gy-dur-slow) var(--gy-ease-out), transform var(--gy-dur-slow) var(--gy-ease-out);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* --- 2) hero 进场编排（Linear/Stripe P1）：加载即播，错峰 --- */
@keyframes gy-rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.hero__eyebrow, .hero__title, .hero__sub, .hero__cta, .hero__stats {
  animation: gy-rise var(--gy-dur-slow) var(--gy-ease-out) both;
}
.hero__title { animation-delay: .06s; }
.hero__sub   { animation-delay: .12s; }
.hero__cta   { animation-delay: .18s; }
.hero__stats { animation-delay: .24s; }

/* --- 3) hero 超级图形更自信（Lovart P0）+ hero 青色收敛（单位改白）--- */
.hero__sg { left: -5%; bottom: -20%; width: clamp(360px, 40vw, 600px); opacity: 0.2; }
.hero__stat .num b { color: #fff; }

/* --- 4) sticky nav 滚动态（Linear/Stripe P0）：零阴影，靠 border+不透明度+高度 --- */
.nav { transition: background var(--gy-dur-base) var(--gy-ease), border-color var(--gy-dur-base) var(--gy-ease); }
.nav__inner { transition: height var(--gy-dur-base) var(--gy-ease); }
.nav.is-scrolled { background: rgba(255,255,255,0.97); border-bottom-color: var(--gy-border-strong); }
.nav.is-scrolled .nav__inner { height: 60px; }

/* --- 5) nav 链接下划线 hover + scroll-spy 当前态（Linear/Stripe P1）--- */
.nav__links a { transition: color var(--gy-dur-fast) var(--gy-ease), border-color var(--gy-dur-fast) var(--gy-ease); }
.nav__links a:hover { border-bottom-color: var(--gy-cyan-400); }
.nav__links a.is-active { color: var(--gy-blue-500); border-bottom-color: var(--gy-blue-500); }

/* --- 6) 卡片 hover 成体系（Linear/Stripe P0）+ 按钮微提升 --- */
.pillar, .cred-card { transition: border-color var(--gy-dur-base) var(--gy-ease), transform var(--gy-dur-base) var(--gy-ease); }
.pillar:hover   { border-color: var(--gy-blue-300); transform: translateY(-3px); }
.cred-card:hover{ border-color: var(--gy-cyan-300); transform: translateY(-3px); }
.member { transition: border-color var(--gy-dur-base) var(--gy-ease); }
.member:hover { border-color: var(--gy-blue-200); }
.btn { transition: background var(--gy-dur-base) var(--gy-ease), color var(--gy-dur-base) var(--gy-ease), border-color var(--gy-dur-base) var(--gy-ease), transform var(--gy-dur-fast) var(--gy-ease); }
.btn-primary:hover, .btn-cyan:hover { transform: translateY(-1px); }

/* --- 7) 产品序号提亮（Canvas P1 / Lovart P1）--- */
.prod-card__no { color: var(--gy-grey-300); font-size: 34px; }

/* --- 8) 数据墙 = 深蓝高潮 band（Lovart P0 + Canvas P0 + Figma）：中段深色锚 + 青色巨数 --- */
.moat { background: var(--gy-blue-900); border-color: var(--gy-blue-900); margin-top: 80px; }
.moat__item + .moat__item { border-left-color: rgba(255,255,255,0.14); }
.moat__num { font-size: clamp(46px, 5vw, 64px); color: var(--gy-cyan-400); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.moat__badge { color: rgba(255,255,255,0.55); }
.moat__lbl { color: rgba(255,255,255,0.72); }
@media (max-width: 760px) { .moat__item + .moat__item { border-top-color: rgba(255,255,255,0.14); } }

/* --- 9) 可访问性：focus-visible 全交互元素（Figma P1）--- */
.btn:focus-visible, .nav__links a:focus-visible, .lang-toggle button:focus-visible,
.footer__col a:focus-visible, .nav__burger:focus-visible, .nav__logo:focus-visible, .ci-v a:focus-visible {
  outline: none; box-shadow: var(--gy-focus-ring); border-radius: var(--gy-radius-sm);
}
.lang-toggle button { min-height: 40px; }

/* --- 10) 表单精修：select 自定义 chevron + focus 流（Linear/Stripe P1）--- */
.field select {
  appearance: none; -webkit-appearance: none; padding-right: 40px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B748A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='m6 9 6 6 6-6'/></svg>");
  background-repeat: no-repeat; background-position: right 14px center;
}
.field:focus-within label { color: var(--gy-blue-500); }
.field label .req { color: var(--gy-cyan-600); }

/* --- 11) contact：白卡顶部行动条 + 图标让出青预算（Lovart/Canvas）--- */
.form-card { border-top: 3px solid var(--gy-cyan-400); }
.contact-info .ci-ico { color: rgba(255,255,255,0.75); }

/* --- 12) contact 区品牌楔形书挡（Lovart P0/P2）：与 hero 呼应，低调出血 --- */
#contact { position: relative; overflow: hidden; }
#contact .wrap { position: relative; z-index: 1; }
.contact-sg { position: absolute; right: -4%; bottom: -14%; width: clamp(260px, 26vw, 440px); opacity: 0.1; pointer-events: none; z-index: 0; }

/* --- 13) 移动端菜单遮罩（Linear/Stripe P2）--- */
.nav__scrim {
  position: fixed; inset: 68px 0 0 0; background: rgba(10,20,48,0.42);
  opacity: 0; visibility: hidden; transition: opacity var(--gy-dur-base) var(--gy-ease), visibility var(--gy-dur-base); z-index: 40;
}
.nav__scrim.show { opacity: 1; visibility: visible; }
@media (min-width: 861px) { .nav__scrim { display: none; } }

/* --- contact：关注（微信 QR + LinkedIn 卡），取消邮箱/电话/地址 --- */
.ci-follow {
  font-family: var(--gy-font-display-en); font-weight: 700; font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.55); margin: 0 0 22px;
}
.li-card {
  display: flex; align-items: center; gap: 16px; margin-top: 24px; padding: 18px 20px;
  border: 1px solid rgba(255,255,255,0.16); border-radius: var(--gy-radius-lg);
  transition: border-color var(--gy-dur-base) var(--gy-ease), background var(--gy-dur-base) var(--gy-ease);
}
.li-card:hover { border-color: var(--gy-cyan-400); background: rgba(255,255,255,0.04); }
.li-ico {
  width: 42px; height: 42px; border-radius: var(--gy-radius-md); flex-shrink: 0;
  background: rgba(255,255,255,0.08); color: #fff; display: flex; align-items: center; justify-content: center;
}
.li-ico svg { width: 22px; height: 22px; }
.li-text { display: flex; flex-direction: column; gap: 3px; flex: 1; }
.li-k { font-weight: 700; font-size: 15px; color: #fff; }
.li-v { font-size: 13px; color: rgba(255,255,255,0.62); }
.li-arrow { color: rgba(255,255,255,0.4); font-size: 18px; transition: color var(--gy-dur-base) var(--gy-ease), transform var(--gy-dur-base) var(--gy-ease); }
.li-card:hover .li-arrow { color: var(--gy-cyan-400); transform: translateX(3px); }

/* --- 匿名成员（博士/CTO，源 PDF 无正面照）用品牌字母徽章替代背影照 --- */
.member__avatar--mono { font-family: var(--gy-font-display-cn); font-size: 26px; font-weight: 700; letter-spacing: 0; }