:root {
  color-scheme: light;
  --red: #f34f40;
  --red-deep: #db372f;
  --red-soft: #fff0ed;
  --gold: #efc36d;
  --ink: #20232b;
  --muted: #777d8a;
  --line: #e9e9ed;
  --paper: #fff;
  --wash: #f7f5f3;
  --green: #2dbb77;
  --purple: #8d6be8;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.site-header { position: sticky; z-index: 40; top: 0; display: flex; width: min(1180px, calc(100% - 40px)); min-height: 74px; margin: 0 auto; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(233,233,237,.8); background: rgba(255,255,255,.9); backdrop-filter: blur(18px); }
.site-brand { display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 800; letter-spacing: -.2px; }
.site-brand-avatar, .mini-avatar, .watch-avatar, .safety-avatar, .cta-avatar, .help-avatar { display: block; background: #f4d8c8 url('/web/assets/ruirui-anime-avatar.png') center 14% / 162% auto no-repeat; }
.site-brand-avatar { width: 42px; height: 42px; border: 2px solid #fff; border-radius: 14px; box-shadow: 0 7px 18px rgba(219,55,47,.15); }
.site-nav { display: flex; align-items: center; gap: 30px; color: #5e6470; font-size: 14px; font-weight: 650; }
.site-nav a:hover { color: var(--red-deep); }
.site-nav .nav-cta { padding: 11px 17px; border-radius: 13px; color: #fff; background: linear-gradient(135deg,var(--red),var(--red-deep)); box-shadow: 0 8px 20px rgba(219,55,47,.2); }
.hero { position: relative; display: grid; width: min(1180px, calc(100% - 40px)); min-height: 650px; margin: 0 auto; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 46px; overflow: hidden; }
.hero::before { position: absolute; z-index: -2; top: 50px; left: -17%; width: 58%; height: 72%; border-radius: 50%; content: ""; background: radial-gradient(circle,rgba(243,79,64,.11),rgba(243,79,64,0) 68%); }
.hero-copy { padding: 74px 0 86px; }
.eyebrow-pill, .section-kicker { display: inline-flex; align-items: center; color: var(--red-deep); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
.eyebrow-pill { gap: 8px; padding: 8px 12px; border: 1px solid rgba(243,79,64,.14); border-radius: 999px; background: var(--red-soft); letter-spacing: .03em; }
.eyebrow-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px rgba(243,79,64,.1); }
.hero h1 { margin: 22px 0 20px; font-size: clamp(46px,5.4vw,74px); line-height: 1.07; letter-spacing: -.06em; }
.hero h1 em { color: var(--red); font-style: normal; }
.hero-copy > p { max-width: 590px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.hero-actions, .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 31px; }
.button { display: inline-flex; min-height: 52px; padding: 0 23px; align-items: center; justify-content: center; gap: 8px; border: 1px solid transparent; border-radius: 15px; font-size: 15px; font-weight: 750; transition: transform .16s,box-shadow .16s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: linear-gradient(135deg,var(--red),var(--red-deep)); box-shadow: 0 11px 24px rgba(219,55,47,.22); }
.button-ghost { border-color: var(--line); color: #3f434c; background: #fff; box-shadow: 0 8px 22px rgba(38,32,28,.06); }
.button-dark { color: #fff; background: #20232b; box-shadow: 0 11px 24px rgba(32,35,43,.17); }
.hero-note { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 25px; color: #8d919b; font-size: 12px; }
.hero-note span::before { margin-right: 6px; color: var(--green); content: "✓"; font-weight: 900; }
.hero-art { position: relative; min-height: 560px; align-self: end; }
.sun-disc { position: absolute; z-index: -1; top: 69px; left: 50%; width: 430px; height: 430px; transform: translateX(-50%); border-radius: 50%; background: linear-gradient(145deg,#f9d78e,var(--gold)); box-shadow: 0 30px 80px rgba(219,123,55,.2); }
.sun-disc::after { position: absolute; inset: 18px; border: 1px solid rgba(255,255,255,.5); border-radius: inherit; content: ""; }
.hero-character { position: absolute; right: -12px; bottom: -36px; width: 520px; height: 590px; background: url('/web/assets/ruirui-anime-avatar.png') center bottom / contain no-repeat; filter: drop-shadow(0 26px 35px rgba(58,34,25,.21)); }
.message-card { position: absolute; z-index: 4; display: flex; min-width: 228px; padding: 14px; align-items: center; gap: 11px; border: 1px solid rgba(255,255,255,.7); border-radius: 18px; background: rgba(255,255,255,.92); box-shadow: 0 18px 44px rgba(46,35,30,.14); backdrop-filter: blur(12px); }
.message-card-left { top: 178px; left: -17px; }
.message-card-right { right: -2px; bottom: 104px; }
.mini-avatar { width: 44px; height: 44px; flex: 0 0 auto; border: 2px solid #fff; border-radius: 14px; }
.message-card strong { display: block; font-size: 13px; }
.message-card p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.voice-bars { display: flex; width: 44px; height: 44px; align-items: center; justify-content: center; gap: 3px; border-radius: 14px; background: var(--red-soft); }
.voice-bars i { width: 3px; border-radius: 3px; background: var(--red); }
.voice-bars i:nth-child(1) { height: 10px; }.voice-bars i:nth-child(2) { height: 19px; }.voice-bars i:nth-child(3) { height: 14px; }.voice-bars i:nth-child(4) { height: 7px; }
.watch-chip { position: absolute; z-index: 5; top: 103px; right: 18px; padding: 10px 14px; border-radius: 13px; color: #2b7f58; background: rgba(238,251,245,.95); box-shadow: 0 12px 30px rgba(35,83,62,.12); font-size: 12px; font-weight: 750; }
.section { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 108px 0; }
.features-section { border-top: 1px solid var(--line); }
.section-heading { max-width: 670px; margin: 0 auto 44px; text-align: center; }
.section-heading.left { margin-right: 0; margin-left: 0; text-align: left; }
.section-heading h2, .device-copy h2, .safety-section h2, .final-cta h2, .download-hero h1, .download-help h2 { margin: 12px 0; font-size: clamp(32px,4vw,48px); line-height: 1.15; letter-spacing: -.045em; }
.section-heading p, .device-copy > p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.feature-card { min-height: 245px; padding: 26px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: 0 12px 34px rgba(38,32,28,.05); }
.feature-icon { display: grid; width: 52px; height: 52px; place-items: center; border-radius: 17px; font-weight: 850; }
.feature-red .feature-icon { color: var(--red-deep); background: var(--red-soft); }.feature-gold .feature-icon { color: #9c6a18; background: #fff6dd; }.feature-purple .feature-icon { color: #6c4ebd; background: #f2edff; }.feature-green .feature-icon { color: #218a5a; background: #e8f8f0; }
.feature-card h3 { margin: 24px 0 10px; font-size: 19px; }.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.device-section { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; }
.check-list { margin: 27px 0; padding: 0; list-style: none; }.check-list li { display: flex; margin: 13px 0; align-items: center; gap: 11px; color: #5d626e; font-size: 14px; }.check-list i { display: grid; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: #fff; background: var(--green); font-style: normal; font-size: 12px; }
.text-link { color: var(--red-deep); font-size: 14px; font-weight: 800; }
.device-showcase { position: relative; min-height: 570px; border-radius: 34px; background: linear-gradient(145deg,#fff1ed,#fff8e7); overflow: hidden; }
.phone-frame { position: absolute; top: 46px; left: 70px; width: 266px; height: 520px; padding: 12px; border: 8px solid #20232b; border-radius: 39px; background: #f8f7f6; box-shadow: 0 28px 55px rgba(37,27,24,.2); }
.phone-top { width: 73px; height: 17px; margin: -12px auto 8px; border-radius: 0 0 12px 12px; background: #20232b; }
.phone-chat-head { display: grid; padding: 8px; grid-template-columns: 40px 1fr; align-items: center; column-gap: 8px; border-bottom: 1px solid var(--line); }.phone-chat-head .mini-avatar { width: 38px; height: 38px; grid-row: span 2; }.phone-chat-head b { font-size: 14px; }.phone-chat-head small { color: var(--muted); }
.chat-bubble { width: max-content; max-width: 82%; margin-top: 18px; padding: 10px 12px; border-radius: 15px; font-size: 12px; }.chat-in { color: #454952; background: #fff; box-shadow: 0 4px 12px rgba(30,25,22,.06); }.chat-out { margin-left: auto; color: #fff; background: linear-gradient(135deg,var(--red),var(--red-deep)); }.chat-bubble.voice { min-width: 92px; }
.phone-input { position: absolute; right: 12px; bottom: 13px; left: 12px; display: flex; height: 42px; padding: 0 7px 0 12px; align-items: center; justify-content: space-between; border-radius: 13px; color: #aaa; background: #fff; font-size: 11px; }.phone-input b { padding: 7px 10px; border-radius: 9px; color: #fff; background: var(--red); }
.watch-frame { position: absolute; right: 46px; bottom: 69px; width: 238px; height: 238px; padding: 18px; border: 13px solid #25272d; border-radius: 64px; background: #fff; box-shadow: 0 28px 54px rgba(37,27,24,.23); }.watch-frame::before,.watch-frame::after { position: absolute; z-index: -1; left: 69px; width: 74px; height: 95px; border-radius: 26px; content: ""; background: #f4c65f; }.watch-frame::before { top: -85px; }.watch-frame::after { bottom: -85px; }
.watch-screen { display: flex; height: 100%; padding: 14px; flex-direction: column; align-items: center; border-radius: 36px; background: linear-gradient(180deg,#fffaf6,#f8f4f0); text-align: center; }.watch-avatar { width: 58px; height: 58px; border: 3px solid #fff; border-radius: 21px; box-shadow: 0 8px 18px rgba(219,55,47,.15); }.watch-screen b { margin-top: 7px; font-size: 14px; }.watch-screen p { margin: 4px 0 8px; color: var(--muted); font-size: 10px; }.watch-screen button { width: 100%; min-height: 34px; border: 0; border-radius: 12px; color: #fff; background: var(--red); font-size: 11px; font-weight: 750; }
.safety-section { display: grid; padding: 64px 72px; grid-template-columns: 180px 1fr; align-items: center; gap: 42px; border-radius: 32px; color: #fff; background: linear-gradient(135deg,#282a31,#17191f); }.safety-section p { margin: 10px 0 0; color: rgba(255,255,255,.67); line-height: 1.8; }.section-kicker.light { color: var(--gold); }.safety-art { position: relative; }.safety-avatar { width: 148px; height: 148px; border: 5px solid rgba(255,255,255,.16); border-radius: 50%; box-shadow: 0 20px 40px rgba(0,0,0,.24); }.safety-art i { position: absolute; right: 18px; bottom: 3px; display: grid; width: 40px; height: 40px; place-items: center; border: 4px solid #25272d; border-radius: 50%; color: #fff; background: var(--green); font-style: normal; font-weight: 900; }
.final-cta { display: grid; width: min(1180px,calc(100% - 40px)); margin: 110px auto; padding: 38px 42px; grid-template-columns: 100px 1fr auto; align-items: center; gap: 28px; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(110deg,#fff7f4,#fffdf8); box-shadow: 0 20px 54px rgba(48,34,29,.07); }.cta-avatar { width: 96px; height: 96px; border: 4px solid #fff; border-radius: 26px; box-shadow: 0 11px 25px rgba(219,55,47,.17); }.final-cta h2 { margin: 7px 0; font-size: 30px; }.final-cta p { margin: 0; color: var(--muted); }.final-cta .cta-actions { margin-top: 0; }
.site-footer { display: grid; width: min(1180px,calc(100% - 40px)); min-height: 120px; margin: 0 auto; grid-template-columns: 1fr auto 1fr; align-items: center; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }.footer-brand { color: var(--ink); }.site-footer p { margin: 0; }.site-footer > div { display: flex; justify-content: flex-end; gap: 25px; }

.download-body { background: linear-gradient(180deg,#fff 0,#fff8f5 420px,#f7f6f5 421px); }.download-main { width: min(1100px,calc(100% - 40px)); margin: 0 auto; }.download-hero { position: relative; min-height: 355px; padding: 92px 250px 60px 0; }.download-hero h1 { margin-top: 14px; font-size: clamp(43px,6vw,68px); }.download-hero p { max-width: 650px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; }.download-character { position: absolute; right: 10px; bottom: 0; width: 230px; height: 300px; background: url('/web/assets/ruirui-anime-avatar.png') center bottom / contain no-repeat; filter: drop-shadow(0 20px 25px rgba(68,41,31,.18)); }
.download-grid { display: grid; grid-template-columns: 1.12fr .94fr .94fr; gap: 18px; align-items: stretch; }.download-card { display: flex; min-height: 420px; padding: 27px; flex-direction: column; border: 1px solid var(--line); border-radius: 25px; background: #fff; box-shadow: 0 16px 38px rgba(50,36,31,.065); }.primary-download { border-color: rgba(243,79,64,.25); box-shadow: 0 20px 50px rgba(219,55,47,.1); }.download-card-head { display: flex; align-items: center; gap: 14px; }.platform-icon { display: grid; width: 56px; height: 56px; flex: 0 0 auto; place-items: center; border-radius: 18px; font-size: 23px; font-weight: 850; }.watch-platform { color: var(--red-deep); background: var(--red-soft); }.iphone-platform { color: #fff; background: #20232b; }.android-platform { color: #1a7b4d; background: #e6f7ee; }.download-card h2 { margin: 3px 0; font-size: 21px; }.download-card-head p { margin: 0; color: var(--muted); font-size: 12px; }.recommended { color: var(--red-deep); font-size: 10px; font-weight: 850; letter-spacing: .06em; }.download-description { min-height: 104px; margin: 25px 0 18px; color: var(--muted); font-size: 14px; line-height: 1.75; }.download-button { width: 100%; }.arch-options { margin-top: 15px; }.arch-options summary { cursor: pointer; color: var(--red-deep); font-size: 13px; font-weight: 750; text-align: center; }.arch-links { display: grid; margin-top: 12px; grid-template-columns: 1fr 1fr; gap: 8px; }.arch-links a { padding: 10px; border-radius: 10px; background: #f7f7f8; }.arch-links b,.arch-links span { display: block; }.arch-links b { font-size: 11px; }.arch-links span { margin-top: 3px; color: var(--muted); font-size: 9px; }.tip-line { display: flex; margin: auto 0 0; align-items: center; gap: 7px; color: var(--muted); font-size: 11px; }.tip-line i { color: var(--green); font-style: normal; font-weight: 900; }
.install-section { padding: 100px 0 75px; }.install-steps { display: grid; margin: 38px 0 24px; padding: 0; grid-template-columns: repeat(3,1fr); gap: 15px; list-style: none; counter-reset: none; }.install-steps li { display: flex; min-height: 145px; padding: 24px; align-items: flex-start; gap: 15px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }.install-steps li > span { display: grid; width: 34px; height: 34px; flex: 0 0 auto; place-items: center; border-radius: 12px; color: #fff; background: var(--red); font-weight: 850; }.install-steps h3 { margin: 4px 0 8px; font-size: 16px; }.install-steps p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }.compatibility-note { padding: 19px 22px; border-left: 4px solid var(--gold); border-radius: 6px 16px 16px 6px; background: #fff9e9; }.compatibility-note b { font-size: 14px; }.compatibility-note p { margin: 6px 0 0; color: #7c7059; font-size: 12px; line-height: 1.7; }
.download-help { display: grid; margin: 0 0 90px; padding: 28px 32px; grid-template-columns: 74px 1fr auto; align-items: center; gap: 21px; border-radius: 24px; color: #fff; background: linear-gradient(135deg,#2b2d34,#17191f); }.help-avatar { width: 70px; height: 70px; border: 3px solid rgba(255,255,255,.19); border-radius: 20px; }.download-help h2 { margin: 0 0 6px; font-size: 22px; }.download-help p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; }.download-help .text-link { color: var(--gold); }

@media (max-width: 920px) {
  .site-nav { gap: 18px; }.site-nav > a:not(.nav-cta):not(:last-child) { display: none; }
  .hero { min-height: 0; grid-template-columns: 1fr; }.hero-copy { z-index: 2; padding-bottom: 0; }.hero-art { width: min(620px,100%); min-height: 560px; margin: 0 auto; }.hero-character { left: 50%; transform: translateX(-50%); }
  .feature-grid { grid-template-columns: 1fr 1fr; }.device-section { grid-template-columns: 1fr; gap: 45px; }.device-showcase { width: min(660px,100%); margin: 0 auto; }
  .final-cta { grid-template-columns: 90px 1fr; }.final-cta .cta-actions { grid-column: 2; }
  .download-grid { grid-template-columns: 1fr 1fr; }.primary-download { grid-column: span 2; }.download-description { min-height: 80px; }
}
@media (max-width: 620px) {
  .site-header { width: calc(100% - 28px); min-height: 64px; }.site-brand { font-size: 16px; }.site-brand-avatar { width: 38px; height: 38px; }.site-nav { gap: 9px; }.site-nav .nav-cta { padding: 10px 12px; font-size: 12px; }
  .hero,.section,.final-cta,.site-footer,.download-main { width: calc(100% - 28px); }.hero-copy { padding-top: 54px; }.hero h1 { font-size: 43px; }.hero-copy > p { font-size: 16px; }.hero-art { min-height: 480px; }.sun-disc { top: 56px; width: 330px; height: 330px; }.hero-character { width: 390px; height: 480px; }.message-card { min-width: 190px; padding: 11px; }.message-card-left { top: 150px; left: -7px; }.message-card-right { right: -8px; bottom: 55px; }.watch-chip { top: 77px; right: 2px; }
  .section { padding: 78px 0; }.section-heading { text-align: left; }.feature-grid { grid-template-columns: 1fr; }.feature-card { min-height: 0; }
  .device-showcase { min-height: 520px; }.phone-frame { left: 19px; width: 230px; height: 462px; }.watch-frame { right: 9px; bottom: 53px; width: 194px; height: 194px; padding: 12px; border-width: 10px; border-radius: 52px; }.watch-frame::before,.watch-frame::after { left: 56px; width: 62px; }.watch-avatar { width: 48px; height: 48px; }.watch-screen { padding: 8px; border-radius: 28px; }.watch-screen p { margin-bottom: 4px; }
  .safety-section { padding: 38px 24px; grid-template-columns: 1fr; text-align: center; }.safety-art { width: max-content; margin: 0 auto; }.safety-section h2 { font-size: 32px; }
  .final-cta { margin: 72px auto; padding: 25px; grid-template-columns: 72px 1fr; gap: 16px; }.cta-avatar { width: 72px; height: 72px; border-radius: 21px; }.final-cta h2 { font-size: 25px; }.final-cta p { font-size: 13px; }.final-cta .cta-actions { grid-column: 1 / -1; }.final-cta .button { flex: 1; }
  .site-footer { padding: 24px 0; grid-template-columns: 1fr auto; gap: 14px; }.site-footer p { display: none; }.site-footer > div { gap: 15px; }
  .download-hero { min-height: 360px; padding: 62px 0 210px; }.download-character { right: 50%; width: 180px; height: 220px; transform: translateX(50%); }.download-grid { grid-template-columns: 1fr; }.primary-download { grid-column: auto; }.download-card { min-height: 0; }.download-description { min-height: 0; }.install-steps { grid-template-columns: 1fr; }.download-help { padding: 24px; grid-template-columns: 64px 1fr; }.help-avatar { width: 62px; height: 62px; }.download-help .text-link { grid-column: 2; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.button { transition: none; } }