:root {
  --night: #071842;
  --night-2: #0c2865;
  --ink: #071842;
  --acid: #d6ff28;
  --mint: #a8ffd1;
  --ice: #f4f7ff;
  --mist: #cfd9ee;
  --line: rgba(7, 24, 66, .18);
  --ease: cubic-bezier(.22, 1, .36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--ice); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif; }
a { color: inherit; }
.shell { width: min(1220px, calc(100% - 64px)); margin: 0 auto; }
.demo-note { min-height: 34px; display: grid; place-items: center; padding: 8px 20px; background: var(--acid); color: var(--ink); font-size: .72rem; font-weight: 800; text-align: center; }

.site-header { display: flex; min-height: 82px; align-items: center; justify-content: space-between; gap: 30px; }
.brand { color: var(--night); font-size: .88rem; font-weight: 900; letter-spacing: .08em; text-decoration: none; }
nav { display: flex; gap: clamp(16px, 3vw, 42px); }
nav a { color: #36507e; font-size: .84rem; font-weight: 750; text-decoration: none; transition: color 180ms ease; }
nav a:hover, nav a:focus-visible { color: var(--night); }

.hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr); gap: clamp(42px, 9vw, 140px); min-height: min(860px, calc(100svh - 116px)); align-items: center; padding-top: clamp(64px, 9vw, 120px); padding-bottom: clamp(88px, 10vw, 132px); }
.issue, .section-heading > div > p { margin: 0; color: #385795; font-size: .78rem; font-weight: 850; letter-spacing: .04em; }
.hero h1 { max-width: 10ch; margin: 24px 0 0; font-size: clamp(3.5rem, 7.2vw, 7.8rem); font-weight: 850; letter-spacing: -.04em; line-height: .94; text-wrap: balance; }
.hero h1 em { color: var(--night-2); font-style: normal; }
.hero-lead { max-width: 32ch; margin: 33px 0 0; color: #304568; font-size: 1rem; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; gap: 15px; min-height: 50px; padding: 14px 18px; font-size: .88rem; font-weight: 850; text-decoration: none; transition: transform 180ms var(--ease), background 180ms ease; }
.button-acid { background: var(--night); color: var(--acid); }.button-acid:hover, .button-acid:focus-visible { background: var(--night-2); transform: translateY(-3px); }.button span { font-size: 1.25rem; }
.quiet-link { color: var(--night); font-size: .86rem; font-weight: 800; text-underline-offset: 5px; }
.hero-footnote { max-width: 38ch; margin: 27px 0 0; color: #6a7e9f; font-size: .76rem; line-height: 1.6; }

.phone-stage { position: relative; display: grid; min-height: 590px; place-items: center; overflow: clip; isolation: isolate; }
.phone-stage::before { position: absolute; z-index: -2; width: min(100%, 470px); aspect-ratio: 1; border-radius: 50%; background: var(--acid); content: ""; }
.orbit { position: absolute; z-index: -1; border: 1px solid rgba(7, 24, 66, .22); border-radius: 50%; }.orbit-one { width: 118%; height: 60%; transform: rotate(-31deg); }.orbit-two { width: 74%; height: 112%; transform: rotate(27deg); }
.phone { position: relative; width: min(100%, 330px); min-height: 574px; overflow: hidden; border: 8px solid var(--night); border-radius: 30px; background: var(--night); box-shadow: 14px 16px 0 #3a5faa; transform: rotate(4deg); animation: phone-enter 760ms var(--ease) both; }
.phone-bar { display: flex; height: 38px; align-items: center; justify-content: space-between; padding: 0 20px; color: #fff; font-size: .65rem; font-weight: 800; }.phone-bar i { width: 45px; height: 8px; border-radius: 99px; background: #fff; }
.phone-body { min-height: 528px; padding: 23px 20px 16px; background: linear-gradient(155deg, #0e337d, #071842 67%); color: #fff; }.app-name { margin: 0; color: var(--acid); font-size: .7rem; font-weight: 900; letter-spacing: .11em; }.phone-kicker { margin: 47px 0 0; color: #a9c7ff; font-size: .72rem; font-weight: 750; }.phone h2 { margin: 12px 0 0; font-size: 1.58rem; letter-spacing: -.035em; line-height: 1.18; text-wrap: balance; }.prompt-card { margin-top: 35px; padding: 17px; background: #f2f5ff; color: var(--night); }.prompt-card span { color: #4269af; font-size: .65rem; font-weight: 850; }.prompt-card p { margin: 11px 0 0; font-size: .76rem; font-weight: 650; line-height: 1.7; }.phone-bottom { position: absolute; right: 20px; bottom: 17px; left: 20px; display: flex; align-items: center; gap: 10px; color: #e5edff; font-size: .68rem; font-weight: 750; }.phone-bottom b { color: var(--acid); }.phone-bottom i { margin-left: auto; color: var(--acid); font-size: 1.25rem; font-style: normal; }.stage-caption { position: absolute; right: 0; bottom: 9px; left: 0; margin: 0; color: #456398; font-size: .72rem; font-weight: 750; text-align: center; }

.why { padding: clamp(90px, 12vw, 170px) 0; background: var(--night); color: #fff; }.why-grid { display: grid; grid-template-columns: minmax(150px, .6fr) minmax(0, 1.85fr); gap: clamp(42px, 9vw, 170px); }.side-note { margin: 13px 0 0; color: var(--acid); font-size: .82rem; font-weight: 800; line-height: 1.65; }.why h2, .inside h2, .outcome h2, .get h2 { margin: 0; font-size: clamp(2.6rem, 5.4vw, 6rem); font-weight: 850; letter-spacing: -.045em; line-height: 1.02; text-wrap: balance; }.why h2 mark { color: var(--mint); background: transparent; }.why-grid div > p { max-width: 43ch; margin: 35px 0 0; color: #afc3ef; font-size: 1rem; line-height: 1.85; }

.inside { padding-top: clamp(96px, 13vw, 178px); padding-bottom: clamp(80px, 10vw, 132px); }.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 45px; }.section-heading h2 { max-width: 13ch; margin-top: 18px; }.section-heading > p { max-width: 31ch; margin: 0 0 8px; color: #4b6085; font-size: .94rem; line-height: 1.8; }
.lesson-list { margin: clamp(60px, 8vw, 104px) 0 0; padding: 0; list-style: none; border-top: 2px solid var(--night); }.lesson-list li { --unit: #244caa; --unit-soft: #e3ebff; display: grid; grid-template-columns: 70px minmax(0, 1fr) max-content; gap: 28px; align-items: center; min-height: 138px; border-bottom: 1px solid var(--line); transition: background 180ms ease, padding 180ms var(--ease); }.lesson-list li:nth-child(2) { --unit: #16758c; --unit-soft: #ddf4f8; }.lesson-list li:nth-child(3) { --unit: #6b4aa5; --unit-soft: #eee7ff; }.lesson-list li:nth-child(4) { --unit: #ae4f39; --unit-soft: #ffebe3; }.lesson-list li:nth-child(5) { --unit: #8a6518; --unit-soft: #fff2cc; }.lesson-list li:nth-child(6) { --unit: #a23d61; --unit-soft: #ffe7ef; }.lesson-list li:nth-child(7) { --unit: #4c721e; --unit-soft: #e8f6d5; }.lesson-list li:hover { padding-left: 15px; background: var(--unit-soft); }.lesson-list li > span { display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid var(--unit); background: var(--unit-soft); color: var(--unit); font-size: .76rem; font-weight: 900; }.lesson-list h3 { max-width: 28ch; margin: 0; font-size: clamp(1.26rem, 2.1vw, 2.05rem); letter-spacing: -.025em; line-height: 1.18; }.lesson-list p { margin: 9px 0 0; color: #52688c; font-size: .82rem; line-height: 1.65; }.lesson-list b { padding: 7px 9px; border: 1px solid var(--unit); background: var(--unit-soft); color: var(--unit); font-size: .74rem; font-weight: 850; white-space: nowrap; }

.outcome { padding: clamp(90px, 13vw, 176px) 0; background: var(--acid); }.outcome-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr); align-items: center; gap: clamp(45px, 9vw, 150px); }.outcome-copy > p { margin: 0 0 22px; color: #354d18; font-size: .84rem; font-weight: 850; }.outcome h2 em { color: var(--night-2); font-style: normal; }.outcome-paper { min-height: 360px; padding: 23px; background: #f8ffea; box-shadow: 11px 11px 0 var(--night); transform: rotate(-2.5deg); }.paper-top { display: flex; justify-content: space-between; gap: 16px; padding-bottom: 15px; border-bottom: 1px solid rgba(7,24,66,.28); color: #36531d; font-size: .72rem; font-weight: 900; }.outcome-paper p { margin: 18px 0 0; padding-bottom: 17px; border-bottom: 1px solid rgba(7,24,66,.12); color: #1b315c; font-size: .82rem; font-weight: 650; line-height: 1.72; }

.get { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(50px, 9vw, 160px); padding-top: clamp(100px, 14vw, 184px); padding-bottom: clamp(100px, 14vw, 184px); }.get h2 { margin-top: 21px; }.get form { align-self: end; }.get label { display: block; margin-bottom: 13px; color: #3e5888; font-size: .83rem; font-weight: 850; }.form-row { display: flex; border-bottom: 2px solid var(--night); }.form-row input { min-width: 0; flex: 1; border: 0; background: transparent; color: var(--night); font: inherit; font-size: 1rem; outline: none; padding: 16px 0; }.form-row input::placeholder { color: #7c8eae; }.form-row button { display: inline-flex; align-items: center; gap: 13px; border: 0; background: transparent; color: var(--night); cursor: pointer; font: inherit; font-size: .88rem; font-weight: 900; padding: 12px 0 12px 17px; transition: color 160ms ease, transform 160ms var(--ease); }.form-row button:hover, .form-row button:focus-visible { color: #3562ab; transform: translateX(4px); }.form-row button span { color: #416cc1; font-size: 1.2rem; }.form-help, .form-result { max-width: 45ch; margin: 15px 0 0; color: #62779c; font-size: .75rem; line-height: 1.65; }.form-result { min-height: 1.65em; color: var(--night); font-weight: 750; }
.site-footer { display: flex; justify-content: space-between; gap: 22px; padding-top: 24px; padding-bottom: 24px; border-top: 1px solid var(--line); color: #516583; font-size: .76rem; }.site-footer a { color: var(--night); font-weight: 850; text-decoration: none; }.site-footer a:hover, .site-footer a:focus-visible { text-decoration: underline; text-underline-offset: 4px; }

.lesson-list b { justify-self: start; }
@keyframes phone-enter { from { opacity: 0; transform: translateY(22px) rotate(4deg) scale(.97); } to { opacity: 1; transform: rotate(4deg) scale(1); } }
@media (max-width: 820px) { .shell { width: min(100% - 40px, 640px); }.site-header { min-height: 70px; }.site-header nav { display: none; }.hero, .why-grid, .outcome-grid, .get { grid-template-columns: 1fr; }.hero { gap: 46px; min-height: 0; }.hero h1 { max-width: 9.8ch; font-size: clamp(3.3rem, 13vw, 5.7rem); }.phone-stage { min-height: 530px; }.section-heading { display: grid; gap: 28px; align-items: start; }.section-heading > p { margin: 0; }.lesson-list li { grid-template-columns: 44px minmax(0,1fr); gap: 17px; min-height: 0; padding: 25px 0; }.lesson-list li:hover { padding-left: 8px; }.lesson-list b { grid-column: 2; }.get { gap: 52px; }.outcome-paper { max-width: 410px; width: calc(100% - 15px); justify-self: end; }.site-footer { flex-direction: column; } }
@media (max-width: 480px) { .demo-note { font-size: .64rem; }.hero h1 { letter-spacing: -.035em; }.phone { width: 286px; min-height: 510px; }.phone-body { min-height: 464px; }.phone-kicker { margin-top: 32px; }.phone h2 { font-size: 1.38rem; }.prompt-card { margin-top: 26px; }.phone-stage { min-height: 490px; }.why h2, .inside h2, .outcome h2, .get h2 { letter-spacing: -.038em; }.form-row { align-items: stretch; flex-direction: column; border-bottom: 0; }.form-row input { border-bottom: 2px solid var(--night); }.form-row button { justify-content: space-between; padding: 19px 0 0; }.outcome-paper { min-height: 0; }.lesson-list h3 { font-size: 1.2rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }