@charset "UTF-8";
:root {
    --ink: #101722;
    --ink-soft: #1b2533;
    --text: #181b22;
    --muted: #6f727b;
    --line: #e6e1dc;
    --paper: #fffaf5;
    --white: #ffffff;
    --blush: #fff0ee;
    --orange: #ff5d24;
    --orange-deep: #e74312;
    --pink: #ed6f9d;
    --pink-light: #ffd8e2;
    --yellow: #ffc94a;
    --mint: #59c9b5;
    --violet: #8a75ef;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 32px;
    --shadow: 0 20px 50px rgba(20, 21, 27, 0.09);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--paper);
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body.menu-open,
body.lightbox-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

button {
    color: inherit;
    font: inherit;
    -webkit-tap-highlight-color: transparent;
}

img {
    display: block;
    max-width: 100%;
}

ul,
ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

h1,
h2,
h3,
p,
figure {
    margin: 0;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid rgba(255, 93, 36, 0.35);
    outline-offset: 4px;
}

.container {
    width: min(1200px, calc(100% - 48px));
    margin-inline: auto;
}

.section {
    padding: 112px 0;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--orange);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.16em;
    line-height: 1.2;
}

.eyebrow::before {
    width: 26px;
    height: 3px;
    border-radius: 9px;
    background: currentColor;
    content: "";
}

.section-heading {
    margin-bottom: 44px;
}

.section-heading h2,
.faq-intro h2 {
    margin-top: 9px;
    font-size: clamp(32px, 4vw, 50px);
    line-height: 1.12;
    letter-spacing: -0.04em;
}

.section-heading > p,
.split-heading > p {
    max-width: 450px;
    color: var(--muted);
    font-size: 15px;
}

.split-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 40px;
}

.button {
    display: inline-flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0 25px;
    font-size: 14px;
    font-weight: 800;
    line-height: 1;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button:hover {
    transform: translateY(-3px);
}

.button:active {
    transform: translateY(1px) scale(0.98);
}

.button-primary,
.button-download {
    color: var(--white);
    background: var(--orange);
    box-shadow: 0 8px 0 var(--orange-deep);
}

.button-primary:hover,
.button-download:hover {
    background: #ff6f3c;
    box-shadow: 0 10px 0 var(--orange-deep);
}

.button-ghost {
    border-color: #d8c8bf;
    background: rgba(255, 255, 255, 0.72);
}

.button-ghost:hover {
    border-color: var(--orange);
    color: var(--orange-deep);
}

[class^="icon-"],
[class*=" icon-"] {
    position: relative;
    display: inline-block;
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
}

.icon-download::before {
    position: absolute;
    top: 2px;
    left: 7px;
    width: 6px;
    height: 10px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    content: "";
    transform: rotate(45deg);
}

.icon-download::after {
    position: absolute;
    bottom: 2px;
    left: 3px;
    width: 14px;
    height: 6px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    border-left: 2px solid currentColor;
    border-radius: 0 0 3px 3px;
    content: "";
}

.icon-arrow::before {
    position: absolute;
    top: 6px;
    left: 5px;
    width: 7px;
    height: 7px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    content: "";
    transform: rotate(45deg);
}

.site-header {
    position: sticky;
    z-index: 50;
    top: 0;
    height: 78px;
    border-bottom: 1px solid rgba(23, 24, 28, 0.08);
    background: rgba(255, 250, 245, 0.95);
    backdrop-filter: blur(18px);
}

.nav-shell {
    display: flex;
    height: 100%;
    align-items: center;
    gap: 26px;
}

.brand {
    display: inline-flex;
    min-width: 190px;
    align-items: center;
    gap: 11px;
    font-size: 18px;
    font-weight: 900;
    letter-spacing: -0.02em;
}

.brand img {
    width: 46px;
    height: 46px;
    border: 2px solid var(--white);
    border-radius: 14px;
    object-fit: cover;
    box-shadow: 0 5px 16px rgba(237, 111, 157, 0.2);
}

.primary-nav {
    margin-left: auto;
}

.primary-nav ul {
    display: flex;
    align-items: center;
    gap: 3px;
}

.primary-nav a {
    position: relative;
    display: flex;
    min-height: 42px;
    align-items: center;
    padding: 0 10px;
    color: #4d5058;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

.primary-nav a::after {
    position: absolute;
    right: 10px;
    bottom: 2px;
    left: 10px;
    height: 3px;
    border-radius: 9px;
    background: var(--orange);
    content: "";
    opacity: 0;
    transform: scaleX(0.35);
    transition: opacity 180ms ease, transform 180ms ease;
}

.primary-nav a:hover,
.primary-nav a.is-active {
    color: var(--orange-deep);
}

.primary-nav a:hover::after,
.primary-nav a.is-active::after {
    opacity: 1;
    transform: scaleX(1);
}

.nav-download {
    min-width: 132px;
    min-height: 44px;
    padding-inline: 20px;
    box-shadow: none;
}

.nav-download:hover {
    box-shadow: none;
}

.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    background: var(--ink);
    color: var(--white);
    cursor: pointer;
}

.icon-menu::before,
.icon-menu::after {
    position: absolute;
    left: 3px;
    width: 14px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    content: "";
    transition: transform 180ms ease, top 180ms ease;
}

.icon-menu::before {
    top: 6px;
    box-shadow: 0 6px 0 currentColor;
}

.icon-menu::after {
    top: 18px;
}

.menu-toggle[aria-expanded="true"] .icon-menu::before {
    top: 10px;
    box-shadow: none;
    transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .icon-menu::after {
    top: 10px;
    transform: rotate(-45deg);
}

.hero {
    position: relative;
    min-height: 690px;
    overflow: hidden;
    border-bottom: 1px solid #ffd3c5;
    background: radial-gradient(circle at 76% 25%, rgba(255, 158, 176, 0.3), transparent 28%), linear-gradient(135deg, #fff9f4 0%, #fff0e8 58%, #ffe2e8 100%);
}

.hero::before,
.hero::after {
    position: absolute;
    border: 2px solid rgba(255, 93, 36, 0.2);
    border-radius: 50%;
    content: "";
}

.hero::before {
    top: -260px;
    right: -160px;
    width: 720px;
    height: 720px;
}

.hero::after {
    right: 80px;
    bottom: -300px;
    width: 560px;
    height: 560px;
}

.hero-lines {
    position: absolute;
    top: 45px;
    right: -2%;
    width: 50%;
    height: 100%;
    opacity: 0.25;
    background-image: repeating-linear-gradient(108deg, transparent 0 28px, rgba(237, 111, 157, 0.35) 29px 30px);
    transform: skewX(-8deg);
}

.hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    min-height: 690px;
    grid-template-columns: 0.92fr 1.08fr;
    align-items: center;
    gap: 60px;
}

.hero-copy {
    padding: 70px 0;
}

.hero-copy h1 {
    max-width: 590px;
    margin: 18px 0 24px;
    font-size: clamp(48px, 5.3vw, 76px);
    line-height: 1.08;
    letter-spacing: -0.065em;
}

.hero-copy h1 strong {
    display: block;
    color: var(--orange);
    font-weight: 900;
}

.hero-copy > p {
    max-width: 540px;
    color: #575a62;
    font-size: 17px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 35px;
}

.hero-actions .button {
    min-width: 164px;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 33px;
}

.hero-tags li {
    position: relative;
    padding: 7px 14px 7px 28px;
    border: 1px solid rgba(237, 111, 157, 0.28);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.6);
    color: #5b5055;
    font-size: 12px;
    font-weight: 700;
}

.hero-tags li::before {
    position: absolute;
    top: 50%;
    left: 13px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--orange);
    content: "";
    transform: translateY(-50%);
}

.hero-visual {
    position: relative;
    min-height: 610px;
}

.hero-orbit {
    position: absolute;
    top: 50px;
    left: 42px;
    width: 505px;
    height: 505px;
    border: 90px solid rgba(255, 93, 36, 0.1);
    border-radius: 50%;
}

.hero-orbit::after {
    position: absolute;
    top: -65px;
    right: -80px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--yellow);
    box-shadow: 70px 420px 0 var(--pink), -355px 315px 0 #ffab8d;
    content: "";
}

.hero-mascot {
    position: absolute;
    z-index: 1;
    top: 28px;
    right: 0;
    width: 190px;
    height: 190px;
    border: 12px solid rgba(255, 255, 255, 0.62);
    border-radius: 50%;
    object-fit: cover;
    transform: rotate(6deg);
}

.phone {
    position: absolute;
    z-index: 2;
    overflow: hidden;
    border: 10px solid #171a20;
    border-radius: 34px;
    background: #171a20;
    box-shadow: 0 34px 70px rgba(22, 17, 21, 0.28);
}

.phone img {
    width: 100%;
    height: 100%;
    border-radius: 22px;
    object-fit: cover;
    object-position: top center;
}

.phone-speaker {
    position: absolute;
    z-index: 3;
    top: 7px;
    left: 50%;
    width: 48px;
    height: 5px;
    border-radius: 9px;
    background: #0b0d10;
    transform: translateX(-50%);
}

.phone-main {
    top: 64px;
    right: 78px;
    width: 276px;
    height: 540px;
    transform: rotate(3deg);
}

.phone-back {
    top: 128px;
    left: 12px;
    width: 235px;
    height: 460px;
    transform: rotate(-7deg);
}

.hero-note {
    position: absolute;
    z-index: 4;
    right: -4px;
    bottom: 55px;
    display: flex;
    align-items: flex-end;
    flex-direction: column;
    color: var(--orange-deep);
    font-size: 14px;
    font-weight: 700;
    transform: rotate(-7deg);
}

.hero-note strong {
    font-size: 28px;
}

.interface-section {
    background: var(--white);
}

.screen-gallery {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
}

.screen-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--paper);
    box-shadow: 0 14px 35px rgba(24, 27, 34, 0.06);
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.screen-card:hover {
    border-color: rgba(255, 93, 36, 0.4);
    box-shadow: 0 22px 48px rgba(255, 93, 36, 0.12);
    transform: translateY(-9px);
}

.screen-open {
    display: block;
    width: 100%;
    height: 388px;
    overflow: hidden;
    border: 0;
    border-bottom: 1px solid var(--line);
    padding: 0;
    background: #ece8e4;
    cursor: zoom-in;
}

.screen-open img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 400ms ease;
}

.screen-card:hover .screen-open img {
    transform: scale(1.035);
}

.screen-card figcaption {
    display: flex;
    min-height: 94px;
    align-items: center;
    gap: 16px;
    padding: 18px;
}

.screen-card figcaption > span {
    color: var(--orange);
    font-size: 27px;
    font-weight: 900;
}

.screen-card figcaption div {
    display: flex;
    flex-direction: column;
}

.screen-card figcaption strong {
    font-size: 16px;
}

.screen-card figcaption small {
    margin-top: 3px;
    color: var(--muted);
    font-size: 12px;
}

.gallery-dots {
    display: none;
    justify-content: center;
    gap: 7px;
    margin-top: 22px;
}

.gallery-dots span {
    width: 7px;
    height: 7px;
    border-radius: 99px;
    background: #d8d4d0;
}

.gallery-dots .is-active {
    width: 25px;
    background: var(--orange);
}

.reading-lab {
    position: relative;
    overflow: hidden;
    color: var(--white);
    background: var(--ink);
}

.reading-lab::before {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 36px 36px;
    content: "";
    mask-image: linear-gradient(to right, transparent, #000 45%, #000);
}

.reading-lab .container {
    position: relative;
}

.light-heading {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    column-gap: 40px;
}

.light-heading .eyebrow,
.light-heading h2 {
    grid-column: 1;
}

.light-heading p {
    grid-row: 1 / span 2;
    grid-column: 2;
    align-self: end;
    color: #aeb7c4;
}

.lab-grid {
    display: grid;
    grid-template-columns: 345px minmax(0, 1fr);
    gap: 46px;
}

.mode-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.mode-card {
    display: grid;
    min-height: 102px;
    grid-template-columns: 52px 1fr 24px;
    align-items: center;
    gap: 15px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    color: var(--white);
    background: var(--ink-soft);
    text-align: left;
    cursor: pointer;
    transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.mode-card:hover {
    border-color: rgba(255, 93, 36, 0.7);
    transform: translateX(5px);
}

.mode-card.is-active {
    border-color: var(--orange);
    background: var(--orange);
    box-shadow: 7px 7px 0 rgba(231, 67, 18, 0.55);
}

.mode-card > i:first-child {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.14);
}

.mode-card > span {
    display: flex;
    flex-direction: column;
}

.mode-card strong {
    font-size: 17px;
}

.mode-card small {
    margin-top: 2px;
    color: #bbc3ce;
    font-size: 12px;
}

.mode-card.is-active small {
    color: rgba(255, 255, 255, 0.8);
}

.icon-scroll::before {
    position: absolute;
    inset: 11px 14px;
    border: 2px solid currentColor;
    border-radius: 3px;
    content: "";
}

.icon-scroll::after {
    position: absolute;
    top: 18px;
    left: 20px;
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    content: "";
    transform: rotate(45deg);
}

.icon-book::before {
    position: absolute;
    inset: 12px 7px;
    border: 2px solid currentColor;
    border-radius: 2px 7px 7px 2px;
    content: "";
}

.icon-book::after {
    position: absolute;
    top: 12px;
    bottom: 12px;
    left: 23px;
    width: 2px;
    background: currentColor;
    content: "";
}

.icon-moon::before {
    position: absolute;
    inset: 10px;
    border-radius: 50%;
    box-shadow: -6px 5px 0 2px currentColor;
    content: "";
}

.reader-preview {
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: #0a0e14;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
}

.reader-top,
.reader-tools {
    display: flex;
    height: 58px;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.reader-top {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: #919ba9;
    font-size: 12px;
}

.reader-top strong {
    color: var(--white);
    font-size: 13px;
}

.reader-canvas {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.reader-canvas::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 10, 15, 0.92), transparent 52%);
    content: "";
}

.reader-canvas img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: opacity 180ms ease, filter 180ms ease;
}

.reader-preview[data-mode="night"] .reader-canvas img {
    filter: brightness(0.55) sepia(0.12);
}

.reader-preview[data-mode="paged"] .reader-canvas img {
    object-fit: contain;
    background: #e8e6e4;
}

.reader-caption {
    position: absolute;
    z-index: 2;
    right: 28px;
    bottom: 24px;
    left: 28px;
    display: flex;
    flex-direction: column;
}

.reader-caption strong {
    font-size: 24px;
}

.reader-caption span {
    color: #d2d6dd;
    font-size: 13px;
}

.reader-tools {
    gap: 22px;
}

.reader-tools i {
    color: #b9c1cc;
}

.progress {
    position: relative;
    flex: 1;
    height: 3px;
    border-radius: 9px;
    background: #3b4553;
}

.progress b {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 42%;
    border-radius: inherit;
    background: var(--orange);
}

.progress b::after {
    position: absolute;
    top: 50%;
    right: -5px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--orange);
    content: "";
    transform: translateY(-50%);
}

.icon-list::before {
    position: absolute;
    inset: 5px 3px;
    background: repeating-linear-gradient(to bottom, currentColor 0 2px, transparent 2px 6px);
    content: "";
}

.icon-sun::before {
    position: absolute;
    inset: 5px;
    border: 2px solid currentColor;
    border-radius: 50%;
    content: "";
    box-shadow: 0 -7px 0 -5px currentColor, 0 7px 0 -5px currentColor, 7px 0 0 -5px currentColor, -7px 0 0 -5px currentColor;
}

.icon-full::before,
.icon-full::after {
    position: absolute;
    inset: 3px;
    border: 2px solid currentColor;
    content: "";
}

.icon-full::before {
    border-right: 0;
    border-bottom: 0;
}

.icon-full::after {
    border-top: 0;
    border-left: 0;
}

.font-control {
    font-weight: 800;
}

.update-center {
    background: var(--paper);
}

.updates-layout {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: var(--shadow);
}

.update-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    margin-bottom: 28px;
    border-radius: 14px;
    padding: 5px;
    background: #f2efec;
}

.update-tabs button {
    min-height: 44px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: #6d6d74;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.update-tabs button.is-active {
    color: var(--white);
    background: var(--orange);
    box-shadow: 0 5px 14px rgba(255, 93, 36, 0.22);
}

.update-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.update-item {
    display: grid;
    min-height: 218px;
    grid-template-columns: 92px 1fr;
    gap: 15px;
    border: 1px solid #ebe6e1;
    border-radius: 16px;
    padding: 12px;
    background: #fffdfb;
    transition: transform 180ms ease, border-color 180ms ease;
}

.update-item[hidden] {
    display: none;
}

.update-item:hover {
    border-color: rgba(255, 93, 36, 0.45);
    transform: translateY(-5px);
}

.update-item > img {
    width: 92px;
    height: 138px;
    border-radius: 10px;
    object-fit: cover;
}

.update-item > div {
    min-width: 0;
}

.update-item span {
    color: var(--orange);
    font-size: 10px;
    font-weight: 800;
}

.update-item h3 {
    overflow: hidden;
    margin: 5px 0;
    font-size: 16px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.update-item p {
    color: var(--muted);
    font-size: 11px;
}

.continue-button {
    display: inline-flex;
    min-height: 32px;
    align-items: center;
    gap: 2px;
    margin-top: 16px;
    border: 1px solid rgba(255, 93, 36, 0.45);
    border-radius: 999px;
    padding: 0 10px;
    color: var(--orange-deep);
    background: transparent;
    font-size: 11px;
    font-weight: 800;
    cursor: pointer;
}

.continue-button:hover {
    color: var(--white);
    background: var(--orange);
}

.continue-button .icon-arrow {
    width: 13px;
    height: 15px;
    transform: scale(0.75);
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 26px;
}

.status-card {
    display: grid;
    min-height: 150px;
    grid-template-columns: 60px 1fr;
    align-items: center;
    gap: 18px;
    scroll-margin-top: 100px;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 22px;
    background: var(--white);
}

.status-card > i {
    width: 58px;
    height: 58px;
    border-radius: 17px;
    color: var(--orange);
    background: #fff0e8;
}

.status-card:nth-child(2) > i {
    color: #20a58e;
    background: #e3f8f3;
}

.status-card:nth-child(3) > i {
    color: #735ce8;
    background: #efebff;
}

.status-card span {
    color: var(--orange);
    font-size: 9px;
    font-weight: 900;
    letter-spacing: 0.15em;
}

.status-card h3 {
    margin: 3px 0 5px;
    font-size: 18px;
}

.status-card p {
    color: var(--muted);
    font-size: 12px;
}

.icon-version::before {
    position: absolute;
    inset: 13px 16px;
    border: 2px solid currentColor;
    border-radius: 3px;
    content: "";
}

.icon-version::after {
    position: absolute;
    top: 21px;
    left: 22px;
    width: 14px;
    height: 2px;
    background: currentColor;
    box-shadow: 0 7px 0 currentColor, 0 14px 0 currentColor;
    content: "";
}

.icon-refresh::before {
    position: absolute;
    inset: 15px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    content: "";
}

.icon-refresh::after {
    position: absolute;
    top: 12px;
    right: 12px;
    border: 5px solid transparent;
    border-bottom-color: currentColor;
    content: "";
    transform: rotate(35deg);
}

.icon-device::before {
    position: absolute;
    inset: 11px 17px 15px;
    border: 2px solid currentColor;
    border-radius: 5px;
    content: "";
}

.icon-device::after {
    position: absolute;
    bottom: 10px;
    left: 25px;
    width: 8px;
    height: 2px;
    background: currentColor;
    content: "";
}

.review-section {
    background: var(--blush);
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.review-card {
    position: relative;
    display: flex;
    min-height: 310px;
    flex-direction: column;
    border: 1px solid rgba(237, 111, 157, 0.3);
    border-radius: 18px;
    padding: 29px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 13px 28px rgba(126, 67, 88, 0.05);
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.review-card:hover {
    box-shadow: 0 20px 40px rgba(126, 67, 88, 0.1);
    transform: translateY(-6px);
}

.quote {
    color: var(--orange);
    font-family: Georgia, serif;
    font-size: 46px;
    font-weight: 900;
    line-height: 0.8;
}

.review-no {
    position: absolute;
    top: 24px;
    right: 25px;
    color: var(--pink);
    font-size: 11px;
    font-weight: 900;
}

.review-card > p {
    margin: 15px 0 22px;
    color: #4d4a50;
    font-size: 14px;
    line-height: 1.85;
}

.review-card footer {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
    border-top: 1px solid rgba(237, 111, 157, 0.24);
    padding-top: 18px;
}

.review-card footer img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
}

.review-card footer div {
    display: flex;
    flex-direction: column;
}

.review-card footer strong {
    font-size: 13px;
}

.review-card footer span {
    color: var(--muted);
    font-size: 10px;
}

.faq-section {
    background: #f5f3f1;
}

.faq-grid {
    display: grid;
    grid-template-columns: 0.7fr 1.3fr;
    gap: 80px;
}

.faq-intro > p {
    max-width: 360px;
    margin-top: 20px;
    color: var(--muted);
}

.help-card {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 40px;
    border: 1px solid rgba(255, 93, 36, 0.2);
    border-radius: 16px;
    padding: 18px;
    background: #fff6ec;
}

.help-card > i {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    color: var(--orange);
    background: var(--white);
}

.help-card div {
    display: flex;
    flex-direction: column;
}

.help-card strong {
    font-size: 13px;
}

.help-card span {
    color: var(--muted);
    font-size: 11px;
}

.icon-help::before {
    position: absolute;
    top: 9px;
    left: 9px;
    width: 24px;
    height: 24px;
    border: 2px solid currentColor;
    border-radius: 50%;
    content: "?";
    font-style: normal;
    font-weight: 900;
    line-height: 22px;
    text-align: center;
}

.accordion {
    border-top: 2px solid var(--ink);
}

.faq-item {
    border-bottom: 1px solid #dcd8d4;
}

.faq-item h3 {
    font-size: 15px;
}

.faq-item button {
    display: flex;
    width: 100%;
    min-height: 76px;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    border: 0;
    padding: 0 7px;
    background: transparent;
    text-align: left;
    cursor: pointer;
}

.faq-item button b {
    margin-right: 24px;
    color: var(--orange);
    font-size: 10px;
}

.icon-plus::before,
.icon-plus::after {
    position: absolute;
    top: 9px;
    left: 3px;
    width: 14px;
    height: 2px;
    background: currentColor;
    content: "";
    transition: transform 180ms ease;
}

.icon-plus::after {
    transform: rotate(90deg);
}

.faq-item.is-open .icon-plus::after {
    transform: rotate(0);
}

.faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 240ms ease;
}

.faq-answer p {
    min-height: 0;
    overflow: hidden;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.8;
}

.faq-item.is-open .faq-answer {
    grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer p {
    padding: 0 48px 22px 48px;
}

.download-cta {
    position: relative;
    overflow: hidden;
    padding: 70px 0;
    color: var(--white);
    background: var(--orange);
}

.download-cta::before {
    position: absolute;
    top: -170px;
    left: -80px;
    width: 480px;
    height: 480px;
    border: 2px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    content: "";
    box-shadow: 0 0 0 45px rgba(255, 255, 255, 0.045), 0 0 0 95px rgba(255, 255, 255, 0.035);
}

.cta-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.download-cta .eyebrow {
    color: #fff3ce;
}

.download-cta h2 {
    margin: 8px 0 5px;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.15;
}

.download-cta p {
    color: rgba(255, 255, 255, 0.78);
}

.button-light {
    min-width: 190px;
    color: var(--orange-deep);
    background: var(--white);
    box-shadow: 0 8px 0 #b8340c;
}

.button-light:hover {
    box-shadow: 0 10px 0 #b8340c;
}

.site-footer {
    color: #aab4c1;
    background: #0a1019;
}

.footer-main {
    display: grid;
    min-height: 150px;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 44px;
}

.footer-brand {
    min-width: auto;
    color: var(--white);
}

.footer-brand img {
    width: 42px;
    height: 42px;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 22px;
}

.footer-nav a {
    font-size: 11px;
    transition: color 180ms ease;
}

.footer-nav a:hover {
    color: var(--white);
}

.footer-main > p {
    color: #7f8a98;
    font-size: 11px;
}

.site-tongji {
    width: 0;
    height: 0;
    overflow: hidden;
}

.lightbox {
    position: fixed;
    z-index: 100;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 40px;
    background: rgba(5, 8, 13, 0.92);
    backdrop-filter: blur(10px);
}

.lightbox[hidden] {
    display: none;
}

.lightbox-body {
    display: grid;
    width: min(920px, 90vw);
    height: min(88vh, 900px);
    place-items: center;
}

.lightbox-body img {
    max-width: 100%;
    max-height: 100%;
    border: 8px solid var(--white);
    border-radius: 18px;
    object-fit: contain;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
    cursor: pointer;
}

.icon-close::before,
.icon-close::after {
    position: absolute;
    top: 9px;
    left: 1px;
    width: 18px;
    height: 2px;
    background: currentColor;
    content: "";
    transform: rotate(45deg);
}

.icon-close::after {
    transform: rotate(-45deg);
}

.download-toast {
    position: fixed;
    z-index: 120;
    right: 24px;
    bottom: 24px;
    padding: 12px 18px;
    border-radius: 12px;
    color: var(--white);
    background: var(--ink);
    font-size: 13px;
    font-weight: 700;
    opacity: 0;
    pointer-events: none;
    transform: translateY(14px);
    transition: opacity 180ms ease, transform 180ms ease;
}

.download-toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1180px) {
    .brand {
        min-width: 160px;
    }

    .primary-nav a {
        padding-inline: 7px;
        font-size: 12px;
    }

    .nav-shell {
        gap: 14px;
    }

    .hero-grid {
        gap: 20px;
    }

    .hero-visual {
        transform: scale(0.92);
        transform-origin: center right;
    }

    .update-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991px) {
    .section {
        padding: 88px 0;
    }

    .site-header {
        height: 70px;
    }

    .nav-shell {
        justify-content: space-between;
    }

    .brand {
        min-width: 0;
    }

    .primary-nav {
        position: fixed;
        z-index: 45;
        top: 70px;
        right: 0;
        left: 0;
        display: none;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        border-top: 1px solid var(--line);
        padding: 16px 24px 24px;
        background: var(--paper);
        box-shadow: 0 20px 35px rgba(20, 21, 27, 0.12);
    }

    .primary-nav.is-open {
        display: block;
    }

    .primary-nav ul {
        align-items: stretch;
        flex-direction: column;
    }

    .primary-nav a {
        min-height: 48px;
        justify-content: space-between;
        border-bottom: 1px solid var(--line);
        padding: 0 4px;
        font-size: 14px;
    }

    .primary-nav a::after {
        top: 50%;
        right: 4px;
        bottom: auto;
        left: auto;
        width: 7px;
        height: 7px;
        border-top: 2px solid currentColor;
        border-right: 2px solid currentColor;
        background: transparent;
        transform: translateY(-50%) rotate(45deg);
    }

    .primary-nav a:hover::after,
    .primary-nav a.is-active::after {
        transform: translateY(-50%) rotate(45deg);
    }

    .menu-toggle {
        display: grid;
        order: 3;
        place-items: center;
    }

    .nav-download {
        margin-left: auto;
    }

    .hero,
    .hero-grid {
        min-height: auto;
    }

    .hero-grid {
        grid-template-columns: 1fr 0.95fr;
    }

    .hero-copy h1 {
        font-size: 52px;
    }

    .hero-visual {
        min-height: 560px;
        transform: scale(0.8);
        transform-origin: center;
    }

    .screen-gallery {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .screen-open {
        height: 480px;
    }

    .lab-grid {
        grid-template-columns: 280px minmax(0, 1fr);
        gap: 26px;
    }

    .mode-card {
        grid-template-columns: 46px 1fr;
    }

    .mode-card > .icon-arrow {
        display: none;
    }

    .reader-canvas {
        height: 360px;
    }

    .status-grid,
    .review-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .status-card:last-child {
        grid-column: 1 / -1;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        gap: 55px;
    }

    .faq-intro {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: end;
        gap: 0 40px;
    }

    .faq-intro .eyebrow,
    .faq-intro h2,
    .faq-intro > p {
        grid-column: 1;
    }

    .help-card {
        grid-row: 1 / span 3;
        grid-column: 2;
        margin: 0;
    }

    .footer-main {
        grid-template-columns: auto 1fr;
        padding: 35px 0;
    }

    .footer-nav {
        justify-content: flex-end;
        flex-wrap: wrap;
    }

    .footer-main > p {
        grid-column: 1 / -1;
        text-align: center;
    }
}

@media (max-width: 767px) {
    html {
        scroll-padding-top: 76px;
    }

    .container {
        width: min(100% - 30px, 1200px);
    }

    .section {
        padding: 70px 0;
    }

    .brand span {
        max-width: 125px;
        overflow: hidden;
        font-size: 16px;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .brand img {
        width: 42px;
        height: 42px;
    }

    .nav-download {
        display: none;
    }

    .section-heading,
    .split-heading,
    .light-heading {
        display: block;
        margin-bottom: 32px;
    }

    .section-heading h2,
    .faq-intro h2 {
        font-size: 34px;
    }

    .section-heading > p,
    .split-heading > p,
    .light-heading p {
        margin-top: 13px;
    }

    .hero-grid {
        display: block;
    }

    .hero-copy {
        padding: 66px 0 12px;
        text-align: center;
    }

    .hero-copy .eyebrow {
        justify-content: center;
    }

    .hero-copy h1 {
        margin: 15px auto 20px;
        font-size: clamp(40px, 12vw, 56px);
        letter-spacing: -0.055em;
    }

    .hero-copy > p {
        margin-inline: auto;
        font-size: 15px;
    }

    .hero-actions {
        display: grid;
        margin-top: 28px;
    }

    .hero-actions .button {
        width: 100%;
    }

    .hero-tags {
        justify-content: center;
        margin-top: 27px;
    }

    .hero-visual {
        left: 50%;
        width: 600px;
        min-height: 570px;
        margin-left: -300px;
        transform: scale(0.72);
        transform-origin: center top;
    }

    .interface-section {
        overflow: hidden;
    }

    .screen-gallery {
        width: calc(100vw - 15px);
        grid-auto-columns: minmax(245px, 76vw);
        grid-template-columns: none;
        grid-auto-flow: column;
        gap: 16px;
        overflow-x: auto;
        padding: 4px 28px 20px 0;
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
    }

    .screen-gallery::-webkit-scrollbar {
        display: none;
    }

    .screen-card {
        scroll-snap-align: start;
    }

    .screen-open {
        height: 390px;
    }

    .gallery-dots {
        display: flex;
    }

    .lab-grid {
        grid-template-columns: 1fr;
    }

    .mode-list {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 9px;
    }

    .mode-card {
        min-height: 126px;
        grid-template-columns: 1fr;
        justify-items: center;
        gap: 8px;
        padding: 13px 8px;
        text-align: center;
    }

    .mode-card:hover {
        transform: translateY(-3px);
    }

    .mode-card > i:first-child {
        width: 42px;
        height: 42px;
    }

    .mode-card strong {
        font-size: 13px;
    }

    .mode-card small {
        font-size: 9px;
    }

    .reader-canvas {
        height: 320px;
    }

    .reader-tools {
        padding-inline: 16px;
    }

    .updates-layout {
        margin-inline: -5px;
        padding: 14px;
        border-radius: 22px;
    }

    .update-tabs {
        overflow-x: auto;
        grid-template-columns: repeat(3, minmax(100px, 1fr));
    }

    .update-grid {
        grid-template-columns: 1fr;
    }

    .update-item {
        grid-template-columns: 100px 1fr;
    }

    .update-item > img {
        width: 100px;
        height: 150px;
    }

    .status-grid,
    .review-grid {
        grid-template-columns: 1fr;
    }

    .status-card:last-child {
        grid-column: auto;
    }

    .review-card {
        min-height: 0;
        padding: 24px;
    }

    .faq-intro {
        display: block;
    }

    .faq-intro > p {
        margin-top: 16px;
    }

    .help-card {
        margin-top: 28px;
    }

    .faq-item button {
        min-height: 70px;
    }

    .faq-item button b {
        display: block;
        margin: 0 0 3px;
    }

    .faq-item.is-open .faq-answer p {
        padding: 0 7px 20px;
    }

    .cta-inner {
        align-items: stretch;
        flex-direction: column;
        gap: 28px;
        text-align: center;
    }

    .download-cta .eyebrow {
        justify-content: center;
    }

    .button-light {
        width: 100%;
    }

    .footer-main {
        display: flex;
        align-items: center;
        flex-direction: column;
        gap: 25px;
        text-align: center;
    }

    .footer-nav {
        justify-content: center;
        gap: 12px 20px;
    }

    .lightbox {
        padding: 18px;
    }

    .lightbox-close {
        top: 14px;
        right: 14px;
    }

    .download-toast {
        right: 15px;
        bottom: 15px;
        left: 15px;
        text-align: center;
    }
}

@media (max-width: 479px) {
    .hero-visual {
        min-height: 515px;
        transform: scale(0.63);
    }

    .hero {
        max-height: 1040px;
    }

    .mode-list {
        grid-template-columns: 1fr;
    }

    .mode-card {
        min-height: 82px;
        grid-template-columns: 46px 1fr;
        justify-items: stretch;
        text-align: left;
    }

    .screen-open {
        height: 350px;
    }

    .reader-caption {
        right: 18px;
        left: 18px;
    }

    .status-card {
        grid-template-columns: 52px 1fr;
        padding: 18px;
    }

    .status-card > i {
        width: 52px;
        height: 52px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}