/* 划懂 Huadong — 官网样式表
   设计基线：1440px 桌面稿，内容栏 1080px，Apple 式克制留白。
   品牌母题：一条选中轨迹向右生长为四角洞察星（.motif / .brandline）。 */

/* ---------- tokens ---------- */
:root {
  --brand: #2458F4;
  --brand-mid: #267FF7;
  --brand-sky: #55C5F3;
  --brand-press: #1B47CC;

  --ink: #1D1D1F;
  --ink-2: #6E6E73;
  --ink-3: #86868B;
  --ink-4: #A6A6AB;

  --surface: #ffffff;
  --surface-2: #F5F5F7;
  --hairline: rgba(0, 0, 0, 0.08);

  --dark: #0B1020;
  --dark-top: #101833;
  --dark-ink: #F5F5F7;
  --dark-ink-2: #9AA0AC;
  --dark-ink-3: #7C838F;

  --r-card: 24px;
  --r-tile: 20px;
  --r-pill: 999px;

  --shadow-card: 0 20px 60px rgba(18, 55, 138, 0.08);
  --shadow-btn: 0 10px 26px rgba(36, 88, 244, 0.26);
  --shadow-btn-hover: 0 14px 32px rgba(36, 88, 244, 0.34);

  --wrap: 1080px;
  --pad-y: 118px;
  --nav-h: 52px;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
          "Microsoft YaHei", sans-serif;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-weight: 600; }
img, svg { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: var(--brand); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--brand-press); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--pad-y) 0; }
.section--gray { background: var(--surface-2); }
.section > .wrap > :first-child { scroll-margin-top: calc(var(--nav-h) + 24px); }
[id] { scroll-margin-top: calc(var(--nav-h) + 28px); }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--surface); color: var(--ink); font-size: 14px;
  padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow-card);
  transition: top .15s ease;
}
.skip:focus { top: 12px; }

/* ---------- brand mark ---------- */
.mark {
  border-radius: 23%;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-mid) 56%, var(--brand-sky) 100%);
  flex: none;
}
.mark svg { width: 100%; height: 100%; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  transition: box-shadow .2s ease;
}
.nav[data-scrolled="true"] { box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06); }
.nav__in {
  max-width: var(--wrap); margin: 0 auto; padding: 0 24px;
  height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.nav__brand { display: flex; align-items: center; gap: 9px; color: var(--ink); }
.nav__brand .mark { width: 22px; height: 22px; }
.nav__brand span { font-size: 16px; font-weight: 600; letter-spacing: .01em; }
.nav__links { display: flex; align-items: center; gap: 34px; }
.nav__links a { font-size: 13.5px; color: var(--ink); }
.nav__links a:hover { color: var(--brand); }
.nav__right { display: flex; align-items: center; gap: 16px; }

.langsw { display: flex; align-items: center; background: #F0F0F2; border-radius: var(--r-pill); padding: 2px; }
.langsw a, .langsw span {
  font-size: 12px; font-weight: 500; color: var(--ink-3);
  padding: 4px 11px; border-radius: var(--r-pill); line-height: 1.35;
}
.langsw a:hover { color: var(--ink); }
.langsw [aria-current="true"] {
  font-weight: 600; color: var(--ink); background: var(--surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-size: 17px; font-weight: 500; line-height: 1.2;
  padding: 15px 32px; border-radius: var(--r-pill);
  transition: background-color .15s ease, box-shadow .2s ease, transform .15s ease, color .15s ease;
}
.btn--primary { background: var(--brand); color: #fff; box-shadow: var(--shadow-btn); }
.btn--primary:hover { background: var(--brand-press); color: #fff; box-shadow: var(--shadow-btn-hover); transform: translateY(-1px); }
.btn--primary:active { transform: translateY(0); box-shadow: var(--shadow-btn); }
.btn--text { color: var(--brand); padding: 15px 4px; }
.btn--text:hover { color: var(--brand-press); }
.btn--text svg { width: 15px; height: 15px; transition: transform .15s ease; }
.btn--text:hover svg { transform: translateX(3px); }
.btn--nav { font-size: 13px; padding: 7px 17px; }
.btn-row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; justify-content: center; }

/* ---------- 下载按钮状态 ---------- */
/* 安装包/商店链接还没有时的样子：不是死链，而是明确的“暂不可点”。
   状态由 HTML 直接渲染，禁用 JS 也读得到。 */
.btn.is-unavailable {
  background: #C9CBD1; color: #fff; box-shadow: none; cursor: default; pointer-events: none;
}
.btn--text.is-unavailable { background: none; color: var(--ink-3); }
.btn--text.is-unavailable svg { display: none; }

.dl-note {
  margin-top: 16px; font-size: 13px; line-height: 1.6; color: var(--ink-3); text-align: center;
}
.dl-note a { font-weight: 500; }
.dl-note--ok { color: var(--brand); }

/* 点完下载后把“快速上手”那三步高亮一下 —— 这个产品最大的流失点是
   装完没去勾辅助功能，下载完成正是提醒的时机。 */
@keyframes hd-flash {
  0%   { box-shadow: 0 0 0 0 rgba(36, 88, 244, .26); }
  100% { box-shadow: 0 0 0 26px rgba(36, 88, 244, 0); }
}
.flash { animation: hd-flash 1.15s ease-out; border-radius: var(--r-card); }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: 96px 0 118px; }
.hero__glow {
  position: absolute; inset: -160px 0 auto 0; height: 900px; pointer-events: none;
  background: radial-gradient(760px 440px at 50% 190px,
    rgba(85, 197, 243, 0.20), rgba(38, 127, 247, 0.09) 44%, rgba(255, 255, 255, 0) 72%);
}
.hero__in { position: relative; display: flex; flex-direction: column; align-items: center; }
.hero h1 {
  font-size: clamp(34px, 4.75vw, 68px); line-height: 1.15; letter-spacing: -.025em;
  text-align: center; text-wrap: balance;
}
.hero__lead {
  margin-top: 22px; max-width: 660px;
  font-size: clamp(16px, 1.5vw, 21px); line-height: 1.62; color: var(--ink-2);
  text-align: center; text-wrap: pretty;
}
.hero .btn-row { margin-top: 38px; }
.hero__meta { margin-top: 22px; font-size: 13px; color: var(--ink-3); text-align: center; }

/* ---------- hero product shot ---------- */
.shot-wrap { --s: 1; margin-top: 76px; height: calc(466px * var(--s)); display: flex; justify-content: center; }
.shot { position: relative; width: 1080px; height: 466px; flex: none; transform: scale(var(--s)); transform-origin: 50% 0; }

.shot__icon {
  position: absolute; left: 834px; top: 22px; z-index: 3; width: 96px; height: 96px;
  border-radius: 22px;
  box-shadow: 0 18px 40px rgba(18, 55, 138, 0.26), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.card {
  position: absolute; left: 232px; top: 26px; z-index: 2;
  width: 560px; height: 366px; border-radius: 14px; overflow: hidden;
  background: var(--surface); display: flex; flex-direction: column;
  transform: perspective(2200px) rotateY(-4deg) rotateX(1.5deg);
  box-shadow: 0 44px 90px rgba(18, 55, 138, 0.20), 0 4px 14px rgba(18, 55, 138, 0.08),
              0 0 0 1px rgba(18, 55, 138, 0.06);
}
.card__bar {
  position: relative; height: 64px; flex: none;
  background: linear-gradient(180deg, #E7F2FE 0%, #F4FAFF 100%);
  display: flex; align-items: center; padding: 0 18px; gap: 14px;
}
.card__lights { display: flex; align-items: center; gap: 8px; }
.card__lights i { width: 11px; height: 11px; border-radius: var(--r-pill); background: #D3D7DD; }
.card__avatar { width: 30px; height: 30px; border-radius: var(--r-pill); margin-left: 4px; flex: none; }
.card__id { display: flex; flex-direction: column; gap: 3px; flex-grow: 1; min-width: 0; }
.card__idmain { display: flex; align-items: baseline; gap: 6px; }
.card__idmain b { font-size: 16px; font-weight: 600; }
.card__idmain span { font-size: 13px; color: var(--ink-2); }
.card__idsub { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: #5E7CA6; }
.card__dot { width: 6px; height: 6px; border-radius: var(--r-pill); background: #34C759; flex: none; }
.card__tools { display: flex; align-items: center; gap: 16px; color: #556070; }
.card__tools svg { width: 19px; height: 19px; }

/* brand motif: the selection stroke grows into the insight star */
.brandline {
  position: absolute; left: 0; bottom: 0; width: 55%; height: 3px;
  background: linear-gradient(90deg, var(--brand) 0%, var(--brand-mid) 60%, var(--brand-sky) 100%);
  border-radius: 0 2px 2px 0;
}
.brandline__star { position: absolute; left: calc(55% - 9px); bottom: -8px; width: 19px; height: 19px; }

.card__body { flex-grow: 1; padding: 26px 28px; background: var(--surface); }
.card__body p { font-size: 16.5px; line-height: 1.78; }
.card__body p + p { margin-top: 16px; }
.card__foot {
  flex: none; padding: 14px 20px; border-top: 1px solid rgba(0, 0, 0, 0.07);
  display: flex; align-items: center; gap: 12px;
}
.card__input {
  flex-grow: 1; height: 40px; border-radius: 10px; border: 1px solid #E4E6E9;
  background: #FAFAFB; display: flex; align-items: center; padding: 0 14px;
  font-size: 14px; color: var(--ink-4);
}
.card__send {
  height: 40px; border-radius: 10px; background: #F0F0F2;
  display: flex; align-items: center; padding: 0 20px; font-size: 14px; color: #3C3C43;
}

.capsule { position: absolute; left: 78px; top: 360px; z-index: 4; }
.capsule__in {
  position: relative; display: flex; align-items: center; gap: 10px;
  height: 46px; padding: 0 16px 0 12px; border-radius: var(--r-pill);
  background: linear-gradient(180deg, rgba(233, 244, 254, 0.97) 0%, rgba(211, 233, 253, 0.95) 100%);
  border: 1px solid rgba(88, 158, 240, 0.45);
  box-shadow: 0 14px 34px rgba(18, 55, 138, 0.18);
}
.capsule__in .mark { width: 24px; height: 24px; border-radius: 6px; }
.capsule__in b { font-size: 15px; font-weight: 600; }
.capsule__x { width: 14px; height: 14px; margin-left: 2px; }
.capsule__line {
  position: absolute; left: 34px; bottom: -3px; width: 62px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--brand) 0%, var(--brand-sky) 100%);
}
.capsule__star { position: absolute; left: 88px; bottom: -9px; width: 16px; height: 16px; }

/* ---------- section heads ---------- */
.head { text-align: center; }
.head h2 { font-size: clamp(26px, 3.1vw, 44px); line-height: 1.2; letter-spacing: -.02em; text-wrap: balance; }
.head p { margin-top: 16px; font-size: clamp(16px, 1.4vw, 19px); line-height: 1.6; color: var(--ink-2); }

/* ---------- two modes ---------- */
.modes { margin-top: 62px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.mode {
  background: var(--surface); border-radius: var(--r-card); padding: 40px;
  box-shadow: var(--shadow-card); transition: box-shadow .25s ease, transform .25s ease;
}
.mode:hover { box-shadow: 0 28px 72px rgba(18, 55, 138, 0.12); transform: translateY(-2px); }
.badge {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: .03em;
  border-radius: var(--r-pill); padding: 6px 13px;
  color: var(--brand); background: rgba(36, 88, 244, 0.08);
}
.badge--solid { color: #fff; background: var(--brand); }
.mode h3 { margin-top: 20px; font-size: clamp(20px, 1.8vw, 24px); letter-spacing: -.01em; }
.mode > p { margin-top: 12px; font-size: 16px; line-height: 1.72; color: var(--ink-2); }
.mode hr { height: 1px; border: 0; background: var(--hairline); margin: 28px 0; }
.mode ul { display: flex; flex-direction: column; gap: 16px; }
.mode li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; line-height: 1.65; }
.mode li svg { width: 18px; height: 18px; flex: none; margin-top: 4px; color: var(--brand); }

/* ---------- providers (dark) ---------- */
.dark { position: relative; overflow: hidden; background: var(--dark); padding: 122px 0; color: var(--dark-ink); }
.dark__top { position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, var(--dark-top) 0%, var(--dark) 260px, var(--dark) 100%); }
.dark__glow { position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(680px 380px at 50% 24%, rgba(38, 127, 247, 0.20), rgba(11, 16, 32, 0) 70%); }
.dark .wrap { position: relative; }
.dark .head h2 { color: var(--dark-ink); }
.dark .head p { color: var(--dark-ink-2); }

.providers { margin-top: 58px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.provider {
  display: flex; align-items: center; gap: 18px; min-height: 92px; padding: 16px 24px;
  border-radius: var(--r-tile);
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.10);
  transition: background-color .2s ease, border-color .2s ease;
}
.provider:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(255, 255, 255, 0.18); }
/* White tile normalises eight logos of very different make: some ship their own
   white plate, some are transparent, GLM is a dark plate that would vanish here. */
.provider__tile {
  width: 48px; height: 48px; border-radius: 13px; background: #fff; flex: none;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.24);
}
.provider__tile img { width: 30px; height: 30px; object-fit: contain; }
.provider__tile img.is-wide { width: 34px; height: 34px; }
.provider__tile img.is-plate { border-radius: 7px; }
.provider__tile svg { width: 26px; height: 26px; color: var(--brand); }
.provider span { font-size: 16px; font-weight: 500; }
.provider--custom { background: rgba(255, 255, 255, 0.03); border-style: dashed; border-color: rgba(255, 255, 255, 0.22); }
.provider--custom span { color: #C7CBD4; }
.dark__note { margin-top: 38px; font-size: 14px; line-height: 1.7; color: var(--dark-ink-3); text-align: center; }

/* ---------- steps ---------- */
.steps { margin-top: 68px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px; }
.step__n { font-size: 52px; line-height: 1; font-weight: 600; letter-spacing: -.03em; color: #D4D4DA; }
.step h3 { margin-top: 18px; font-size: 20px; letter-spacing: -.01em; }
.step p { margin-top: 10px; font-size: 15px; line-height: 1.78; color: var(--ink-2); }
.steps-note { margin-top: 58px; display: flex; justify-content: center; }
.steps-note span {
  font-size: 14px; line-height: 1.6; color: var(--ink-2);
  background: var(--surface-2); border-radius: var(--r-pill); padding: 12px 24px; text-align: center;
}
.section--gray .steps-note span { background: var(--surface); }

/* ---------- privacy strip ---------- */
.privacy { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 34px; }
.privacy svg { width: 26px; height: 26px; color: var(--brand); }
.privacy h3 { margin-top: 15px; font-size: 16px; }
.privacy p { margin-top: 7px; font-size: 14px; line-height: 1.68; color: var(--ink-2); }

/* motif divider */
.divider { margin-top: 86px; display: flex; justify-content: center; align-items: center; }
.divider__line {
  position: relative; width: 130px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, rgba(36, 88, 244, 0) 0%, var(--brand) 45%, var(--brand-sky) 100%);
}
.divider__line svg { position: absolute; right: -10px; top: -9px; width: 21px; height: 21px; }

/* ---------- closing cta ---------- */
.cta { margin-top: 80px; display: flex; flex-direction: column; align-items: center; }
.cta h2 { font-size: clamp(26px, 3.1vw, 44px); line-height: 1.2; letter-spacing: -.02em; text-align: center; }
.cta .btn-row { margin-top: 38px; }
.cta__note { margin-top: 28px; max-width: 560px; font-size: 14px; line-height: 1.75; color: var(--ink-2); text-align: center; }

/* ---------- footer ---------- */
.foot { background: var(--surface); border-top: 1px solid var(--hairline); padding: 38px 0 44px; }
.foot__row { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.foot__brand { display: flex; align-items: center; gap: 10px; }
.foot__brand .mark { width: 20px; height: 20px; border-radius: 5px; }
.foot__brand b { font-size: 14px; font-weight: 500; }
.foot__brand span { font-size: 14px; color: var(--ink-3); }
.foot__links { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.foot__links a { font-size: 14px; color: var(--ink-2); }
.foot__links a:hover { color: var(--ink); }
.foot__icp { margin-top: 20px; font-size: 12px; color: var(--ink-4); }

/* ---------- scroll reveal ----------
   隐藏态挂在 .js 下：脚本没跑（禁用 JS、加载失败）时内容必须照常可见，
   而不是留下一整页 opacity:0 的空白。.js 由 <head> 里的内联脚本立刻加上，
   所以不会先闪一下再隐藏。 */
.js .reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity .6s cubic-bezier(.22, .61, .36, 1), transform .6s cubic-bezier(.22, .61, .36, 1);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1140px) { .shot-wrap { --s: .88; } }
@media (max-width: 1000px) {
  :root { --pad-y: 92px; }
  .shot-wrap { --s: .76; }
  .providers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .privacy { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 34px; }
  .modes { gap: 20px; }
  .mode { padding: 32px; }
  .steps { gap: 32px; }
}
@media (max-width: 860px) {
  .nav__links { display: none; }
  .shot-wrap { --s: .66; }
  .hero { padding: 72px 0 92px; }
}
@media (max-width: 700px) {
  :root { --pad-y: 76px; }
  .modes { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 36px; margin-top: 48px; }
  .step__n { font-size: 40px; }
  .head p { margin-top: 12px; }

  /* the three-object composition stops working below this width: drop the app
     icon (it is already in the nav) and stack card + capsule at full size */
  .shot-wrap { --s: 1; height: auto; margin-top: 48px; }
  .shot { width: 100%; height: auto; transform: none; padding-bottom: 22px; }
  .shot__icon { display: none; }
  .card {
    position: static; width: 100%; max-width: 520px; height: auto;
    margin: 0 auto; transform: none;
    box-shadow: 0 22px 50px rgba(18, 55, 138, 0.16), 0 0 0 1px rgba(18, 55, 138, 0.06);
  }
  .card__bar { padding: 0 14px; gap: 10px; height: 60px; }
  .card__lights { display: none; }
  .card__body { padding: 20px; min-height: 128px; }
  .card__body p { font-size: 15.5px; }
  .capsule { position: static; margin: -22px 0 0 8px; }
  .divider { margin-top: 62px; }
  .cta { margin-top: 58px; }
}
@media (max-width: 560px) {
  .wrap, .nav__in { padding: 0 20px; }
  .providers { grid-template-columns: minmax(0, 1fr); }
  .privacy { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .btn-row { flex-direction: column; gap: 14px; width: 100%; }
  .btn { width: 100%; }
  .btn--text { padding: 10px 4px; }
  .foot__row { flex-direction: column; align-items: flex-start; gap: 22px; }
}

.legal-page { width: min(100% - 40px, 800px); margin: 48px auto 80px; line-height: 1.85; overflow-wrap: anywhere; }
.legal-page h1 { font-size: clamp(28px, 5vw, 40px); margin: 24px 0 12px; }
.legal-page h2 { font-size: 21px; margin: 32px 0 12px; }
.legal-page p, .legal-page ul { margin: 12px 0; }
.legal-page ul { list-style: disc; padding-left: 24px; }
.legal-page a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.legal-page section { border-top: 1px solid #d8d8dc; margin-top: 40px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Chrome installation: one direct action, then a usable first explanation. */
.install-help-link { display: inline-block; margin-top: 12px; font-size: 14px; }
.extension-section { border-top: 1px solid var(--hairline); }
.extension-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .65fr); gap: 48px; align-items: center; }
.install-badge { color: var(--brand); font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.extension-top h2 { font-size: clamp(28px, 3.5vw, 42px); line-height: 1.2; letter-spacing: -.035em; }
.extension-intro { margin-top: 20px; color: var(--ink-2); line-height: 1.8; }
.extension-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.extension-actions .btn { text-align: center; white-space: normal; }
.install-meta { font-size: 14px; color: var(--ink-2); line-height: 1.6; }
.install-copy { border: 0; background: none; padding: 10px 0; color: var(--brand); cursor: pointer; font: inherit; font-size: 14px; }
.install-try-link { font-size: 14px; padding: 8px 0; }
.install-platform, .install-status { padding: 16px 20px; margin-top: 24px; background: #edf3ff; color: #183978; border-radius: 12px; font-size: 16px; }
[data-copy-fallback] { margin-top: 16px; }
[data-copy-fallback] label { display: block; }
#install-url { width: 100%; padding: 12px; margin-top: 8px; font: inherit; border: 1px solid #92929a; border-radius: 8px; }
.install-steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px; list-style: none; padding: 32px 0; margin: 32px 0 0; border-top: 1px solid var(--hairline); }
.install-number { color: var(--brand); font-size: 14px; font-weight: 600; }
.install-steps h3 { margin: 12px 0 8px; font-size: 18px; }
.install-steps p { color: var(--ink-2); line-height: 1.7; }
.install-trial { background: var(--surface-2); border-radius: var(--r-card); padding: 28px 32px; }
.install-trial h3 { font-size: 21px; margin-bottom: 8px; }
.install-trial p { color: var(--ink-2); }
.install-trial blockquote { margin: 24px 0 12px; padding: 16px 20px; border-left: 3px solid var(--brand); background: white; font-size: 18px; line-height: 1.8; user-select: text; }
.install-trial blockquote::selection { background: #b9d9ff; color: #112748; }
.install-trial button { cursor: pointer; font-family: inherit; margin-bottom: 12px; }
.install-privacy, .install-mac { font-size: 14px; color: var(--ink-2); margin-top: 24px; line-height: 1.8; }
.install-faq { margin-top: 24px; padding: 20px 0; border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.install-faq summary { cursor: pointer; font-weight: 600; padding: 4px 0; }
.install-faq p { margin-top: 16px; color: var(--ink-2); line-height: 1.8; }
[hidden] { display: none !important; }
@media (max-width: 700px) {
  .extension-top, .install-steps { grid-template-columns: 1fr; gap: 24px; }
  .extension-actions { align-items: stretch; }
  .extension-actions .btn { justify-content: center; }
  .install-trial { padding: 24px 20px; }
  .install-steps { margin-top: 24px; }
}