@charset "utf-8";

:root {
  --pair-ink: #17181d;
  --pair-muted: #60626b;
  --pair-paper: #f4f1ea;
  --pair-violet: #6b64e8;
  --pair-violet-pale: #d8d6ff;
  --pair-line: #cbc6bd;
}

body { background: var(--pair-paper); color: var(--pair-ink); }
::selection { background: var(--pair-violet-pale); }
.product-nav { border-bottom: 1px solid rgba(23, 24, 29, 0.15); }
.product-brand strong { color: var(--pair-violet); }
.pair-shell { width: min(1320px, calc(100% - 2 * clamp(20px, 5vw, 72px))); margin: 0 auto; }
.product-label { margin: 0; color: var(--pair-violet); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.16em; }

.pair-hero { display: grid; min-height: 100svh; grid-template-columns: minmax(350px, 0.88fr) minmax(520px, 1.12fr); align-items: center; gap: clamp(30px, 5vw, 90px); padding: 118px clamp(20px, 5vw, 72px) 70px; background: linear-gradient(115deg, var(--pair-paper) 0 54%, var(--pair-violet-pale) 54% 100%); }
.pair-hero-copy { max-width: 640px; }
.pair-hero h1 { max-width: 670px; margin: 23px 0 0; font-size: clamp(2.4rem, 3.3vw, 4.2rem); font-weight: 700; letter-spacing: -0.075em; line-height: 1.08; }
.pair-lead { max-width: 600px; margin: 32px 0 0; color: var(--pair-muted); font-size: clamp(1rem, 1.3vw, 1.14rem); line-height: 2; }
.store-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.store-button { display: inline-flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 28px; padding: 0 18px; border: 1px solid var(--pair-ink); background: transparent; font-size: 0.82rem; font-weight: 700; transition: transform 180ms ease, background 180ms ease, color 180ms ease; }
.store-button:hover { transform: translateY(-2px); }
.store-button-dark { background: var(--pair-ink); color: #fff; }
.pair-note { margin: 18px 0 0; color: #777981; font-size: 0.76rem; }

.pair-demo { position: relative; min-height: min(78vh, 770px); }
.pair-demo::before { position: absolute; top: 8%; right: 3%; bottom: 6%; left: 9%; border: 1px solid rgba(23, 24, 29, 0.24); border-radius: 48% 48% 10px 10px; content: ""; }
.pair-demo-caption { position: absolute; z-index: 8; top: 3%; left: 2%; padding: 12px 14px; background: var(--pair-ink); color: #fff; }
.pair-demo-caption span, .pair-demo-caption strong { display: block; }
.pair-demo-caption span { color: var(--pair-violet-pale); font-size: 0.62rem; letter-spacing: 0.16em; }
.pair-demo-caption strong { margin-top: 3px; font-size: 0.78rem; }
.device { position: absolute; overflow: hidden; margin: 0; padding: 8px; border: 1px solid rgba(255, 255, 255, 0.25); border-radius: 38px; background: #101116; box-shadow: 0 34px 80px rgba(30, 29, 46, 0.25); }
.device img { width: 100%; border-radius: 30px; }
.device-camera { z-index: 4; top: 4%; right: 12%; width: min(48%, 330px); transform: rotate(1.5deg); }
.device-connect { z-index: 3; bottom: 0; left: 5%; width: min(35%, 235px); transform: rotate(-4deg); }
.connection-line { position: absolute; z-index: 6; bottom: 17%; left: 34%; display: flex; align-items: center; color: var(--pair-ink); font-size: 0.62rem; font-weight: 800; letter-spacing: 0.1em; transform: rotate(-8deg); }
.connection-line i { width: clamp(24px, 4vw, 58px); border-top: 1px dashed currentColor; }
.connection-line span { padding: 7px; border: 1px solid currentColor; border-radius: 50%; background: var(--pair-paper); }

.use-scenes, .how-it-works, .pair-details, .pair-download { padding: clamp(90px, 11vw, 160px) 0; }
.plain-heading { display: grid; grid-template-columns: minmax(130px, 0.35fr) 1fr; gap: 40px; padding-bottom: clamp(50px, 7vw, 90px); border-bottom: 1px solid var(--pair-line); }
.plain-heading p, .how-heading > p:first-child { margin: 0; color: var(--pair-violet); font-size: 0.78rem; font-weight: 700; }
.plain-heading h2, .how-heading h2, .detail-copy h2, .privacy-note h2, .pair-download h2 { margin: 0; font-size: clamp(1.8rem, 3.2vw, 3.6rem); letter-spacing: -0.055em; line-height: 1.2; }
.scene-list article { display: grid; grid-template-columns: minmax(90px, 0.35fr) minmax(0, 1fr); gap: 40px; align-items: start; padding: 36px 0; border-bottom: 1px solid var(--pair-line); }
.scene-number { margin: 0; color: var(--pair-violet); font-size: 0.78rem; font-weight: 800; }
.scene-list article > div { display: grid; grid-template-columns: 0.55fr 1fr; gap: clamp(30px, 6vw, 100px); }
.scene-list h3 { margin: 0; font-size: clamp(1.25rem, 1.8vw, 1.9rem); }
.scene-list article p:last-child { max-width: 600px; margin: 0; color: var(--pair-muted); line-height: 1.9; }

.how-it-works { background: var(--pair-ink); color: #fff; }
.how-heading { display: grid; grid-template-columns: 0.3fr 0.9fr 0.7fr; gap: clamp(28px, 5vw, 80px); align-items: end; }
.how-heading h2 { font-size: clamp(1.8rem, 2.9vw, 3.2rem); }
.how-heading > p:last-child { margin: 0; color: #aaaab1; line-height: 1.9; }
.setup-board { display: grid; grid-template-columns: 1fr auto 1fr; gap: clamp(20px, 3vw, 44px); align-items: center; margin-top: clamp(65px, 8vw, 110px); }
.setup-device { display: grid; grid-template-columns: minmax(150px, 0.7fr) 1fr; gap: clamp(24px, 3vw, 46px); align-items: center; }
.setup-device figure { overflow: hidden; max-width: 250px; margin: 0; padding: 7px; border: 1px solid #45464e; border-radius: 30px; background: #0c0d10; }
.setup-device figure img { border-radius: 23px; }
.setup-device span { color: var(--pair-violet-pale); font-size: 0.73rem; font-weight: 700; }
.setup-device h3 { margin: 9px 0 0; font-size: clamp(1.15rem, 1.6vw, 1.7rem); }
.setup-device p { margin: 17px 0 0; color: #aaaab1; font-size: 0.9rem; line-height: 1.8; }
.setup-link { display: flex; align-items: center; color: var(--pair-violet-pale); font-size: 0.65rem; letter-spacing: 0.12em; }
.setup-link span { width: 26px; border-top: 1px dashed currentColor; }
.setup-link b { padding: 10px 8px; border: 1px solid currentColor; border-radius: 50%; }

.pair-details { background: #fff; }
.detail-layout { display: grid; grid-template-columns: 1fr minmax(300px, 0.72fr); gap: clamp(60px, 11vw, 170px); align-items: center; }
.detail-copy h2 { margin-top: 22px; font-size: clamp(1.8rem, 2.9vw, 3.2rem); }
.spec-list { margin: 50px 0 0; border-top: 1px solid var(--pair-line); }
.spec-list div { display: grid; grid-template-columns: 0.42fr 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--pair-line); }
.spec-list dt { font-weight: 700; }
.spec-list dd { margin: 0; color: var(--pair-muted); }
.settings-shot { max-width: 360px; margin: 0 auto; }
.settings-shot img { padding: 8px; border-radius: 38px; background: var(--pair-ink); box-shadow: 0 30px 65px rgba(23, 24, 29, 0.18); }
.settings-shot figcaption { margin-top: 18px; color: var(--pair-muted); font-size: 0.78rem; text-align: center; }

.privacy-note { padding: 64px 0; background: var(--pair-violet-pale); }
.privacy-note-inner { display: grid; grid-template-columns: 1fr 0.6fr auto; gap: clamp(28px, 5vw, 70px); align-items: center; }
.privacy-note h2 { margin-top: 12px; font-size: clamp(1.35rem, 1.9vw, 2.1rem); }
.privacy-note-inner > p { margin: 0; color: #4c4b60; line-height: 1.8; }
.privacy-note a { padding-bottom: 5px; border-bottom: 1px solid currentColor; font-size: 0.8rem; font-weight: 700; }

.pair-download-inner { display: grid; grid-template-columns: auto 1fr auto; gap: clamp(30px, 6vw, 90px); align-items: center; }
.pair-download-inner > img { width: clamp(110px, 12vw, 180px); border-radius: 24%; box-shadow: 0 24px 50px rgba(23, 24, 29, 0.18); }
.pair-download p { margin: 0 0 12px; color: var(--pair-violet); font-weight: 700; }
.pair-download h2 { font-size: clamp(1.8rem, 2.8vw, 3.1rem); }
.pair-download .store-actions { flex-direction: column; margin: 0; }

@media (max-width: 980px) {
  .pair-hero { grid-template-columns: 0.82fr 1.18fr; }
  .pair-hero h1 { font-size: clamp(2.35rem, 4vw, 3.4rem); }
  .how-heading { grid-template-columns: 0.3fr 1fr; }
  .how-heading > p:last-child { grid-column: 2; }
  .setup-board { grid-template-columns: 1fr; }
  .setup-link { justify-content: center; transform: rotate(90deg); }
  .privacy-note-inner { grid-template-columns: 1fr 0.7fr; }
  .privacy-note a { grid-column: 2; width: fit-content; }
  .pair-download-inner { grid-template-columns: auto 1fr; }
  .pair-download .store-actions { grid-column: 2; flex-direction: row; }
}

@media (max-width: 720px) {
  .pair-hero { display: block; min-height: auto; padding-top: 112px; background: linear-gradient(168deg, var(--pair-paper) 0 51%, var(--pair-violet-pale) 51% 100%); }
  .pair-hero h1 { font-size: clamp(2rem, 8vw, 3.1rem); }
  .pair-demo { min-height: 560px; margin-top: 45px; }
  .device-camera { right: 5%; width: min(56%, 310px); }
  .device-connect { width: min(43%, 220px); }
  .plain-heading, .scene-list article, .scene-list article > div, .how-heading, .detail-layout, .privacy-note-inner, .pair-download-inner { grid-template-columns: 1fr; }
  .scene-list article { gap: 16px; }
  .scene-list article > div { gap: 14px; }
  .how-heading > p:last-child, .privacy-note a, .pair-download .store-actions { grid-column: 1; }
  .setup-device { grid-template-columns: 0.65fr 1fr; }
  .spec-list div { grid-template-columns: 1fr; gap: 6px; }
  .privacy-note a { margin-top: 8px; }
  .pair-download-inner > img { width: 110px; }
  .pair-download .store-actions { flex-direction: column; }
}

@media (max-width: 460px) {
  .pair-demo { min-height: 490px; }
  .setup-device { grid-template-columns: 0.72fr 1fr; }
  .store-button { width: 100%; }
}