:root {
    --primary: #1fc372;
    --primary-dark: #16a85f;
    --primary-soft: #e8f9f0;
    --primary-softer: #f1fbf6;
    --amber: #f5a623;
    --amber-soft: #fff6e4;
    --blue: #2f80ed;
    --blue-soft: #edf5ff;
    --rose: #f05a4f;
    --rose-soft: #fff0ee;
    --violet: #6f5bd7;
    --violet-soft: #f2efff;
    --warn: #ff6b3d;
    --ink: #0f1a14;
    --ink2: #2d3a32;
    --ink3: #5f6e64;
    --ink4: #97a39b;
    --line: #e6ebe7;
    --line2: #f1f4f1;
    --bg: #ffffff;
    --bg-soft: #f6f9f6;
    --bg-dark: #0d1410;
    --shadow-sm: 0 1px 2px rgba(15, 26, 20, .04), 0 1px 3px rgba(15, 26, 20, .04);
    --shadow-md: 0 4px 14px rgba(15, 26, 20, .06), 0 1px 4px rgba(15, 26, 20, .03);
    --shadow-lg: 0 30px 60px rgba(15, 26, 20, .12), 0 8px 24px rgba(15, 26, 20, .06);
    --shadow-green: 0 12px 32px rgba(31, 195, 114, .28), 0 4px 12px rgba(31, 195, 114, .18);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --max: 1200px;
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

*,
*:before,
*:after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.nav-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

button,
input,
select,
textarea {
    font: inherit;
}

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

.container {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 24px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .78);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color .2s, box-shadow .2s, background .2s;
    height: 64px;
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 0 max(24px, calc((100vw - var(--max)) / 2 + 24px));
}

.site-header.scrolled {
    background: rgba(255, 255, 255, .94);
    border-bottom-color: var(--line);
    box-shadow: 0 1px 0 rgba(15, 26, 20, .02);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
    white-space: nowrap;
}

.brand img {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(31, 195, 114, .2);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: flex-end;
}

.site-nav a {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--ink2);
    white-space: nowrap;
    transition: background .15s, color .15s, transform .12s;
}

.site-nav a:hover {
    background: var(--line2);
    color: var(--ink);
}

.contact-entry {
    position: relative;
    margin-left: 8px;
}

.use-action {
    display: inline-flex;
    min-height: 38px;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 10px;
    background: var(--ink);
    color: #fff;
    padding: 0 16px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 8px 18px rgba(15, 26, 20, .16);
    transition: background .15s, box-shadow .15s, transform .15s;
}

.use-action:hover,
.use-action:focus-visible {
    background: var(--primary-dark);
    box-shadow: 0 12px 28px rgba(31, 195, 114, .25);
    outline: none;
    transform: translateY(-1px);
}

.contact-popover {
    position: absolute;
    top: calc(100% + 14px);
    right: 0;
    z-index: 80;
    width: 268px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, .98);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity .16s, transform .16s;
}

.contact-popover:before {
    content: "";
    position: absolute;
    top: -7px;
    right: 24px;
    width: 14px;
    height: 14px;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
    background: #fff;
    transform: rotate(45deg);
}

.contact-entry:hover .contact-popover,
.contact-entry:focus-within .contact-popover,
.contact-entry.open .contact-popover {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.contact-popover-head {
    display: grid;
    gap: 2px;
    padding: 2px 2px 10px;
}

.contact-popover-head b {
    color: var(--ink);
    font-size: 14px;
    line-height: 1.3;
}

.contact-popover-head span {
    color: var(--ink4);
    font-size: 12px;
}

.contact-popover img {
    width: 100%;
    border: 1px solid var(--line2);
    border-radius: 12px;
    background: #fff;
}

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: #fff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 6px;
}

.nav-toggle span {
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--ink);
}

.hero {
    position: relative;
    overflow: visible;
    padding: 80px 0 60px;
    background:
            radial-gradient(ellipse 800px 400px at 50% -10%, rgba(31, 195, 114, .10), transparent 60%),
            radial-gradient(ellipse 600px 300px at 10% 60%, rgba(45, 212, 126, .06), transparent 70%),
            var(--bg);
}

.hero:before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
            linear-gradient(rgba(31, 195, 114, .04) 1px, transparent 1px),
            linear-gradient(90deg, rgba(31, 195, 114, .04) 1px, transparent 1px);
    background-size: 48px 48px;
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 80%);
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 80%);
}

.hero-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: .86fr 1.14fr;
    gap: 56px;
    align-items: center;
}

.hero-copy {
    text-align: left;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 6px 6px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #fff;
    box-shadow: var(--shadow-sm);
    font-size: 12px;
    font-weight: 500;
    color: var(--ink2);
    margin-bottom: 24px;
}

.hero-pill-tag {
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .04em;
}

.hero-title {
    margin: 0 0 20px;
    color: var(--ink);
    font-size: 72px;
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: 0;
}

.hero-title .accent {
    display: inline-block;
    width: fit-content;
    margin: 0;
    padding: 0 .08em .12em;
    color: var(--primary);
    font-style: italic;
    line-height: 1.18;
}

.hero-subtitle {
    max-width: 560px;
    margin: 0 0 34px;
    color: var(--ink3);
    font-size: 18px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.hero-proof {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    max-width: 520px;
    margin-top: 28px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--line);
    box-shadow: var(--shadow-sm);
}

.hero-proof div {
    padding: 16px 18px;
    background: rgba(255, 255, 255, .86);
}

.hero-proof b,
.hero-proof span {
    display: block;
}

.hero-proof b {
    color: var(--ink);
    font-size: 20px;
    line-height: 1.2;
}

.hero-proof span {
    margin-top: 4px;
    color: var(--ink4);
    font-size: 12px;
}

.hero-art {
    position: relative;
    aspect-ratio: 1440 / 920;
    min-width: 0;
}

.hero-art > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 1px solid rgba(31, 195, 114, .16);
    border-radius: 28px;
    background: #fff;
    box-shadow: var(--shadow-lg);
}

.hero-art:before {
    content: "";
    position: absolute;
    inset: 34px -10px -18px 24px;
    z-index: -1;
    border-radius: 34px;
    background: linear-gradient(135deg, rgba(31, 195, 114, .14), rgba(31, 195, 114, 0));
    filter: blur(4px);
}

.art-card {
    position: absolute;
    display: grid;
    gap: 3px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, .92);
    box-shadow: var(--shadow-md);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    animation: float 4s ease-in-out infinite;
}

.art-card.top {
    top: 12%;
    left: -18px;
}

.art-card.bottom {
    right: -12px;
    bottom: 12%;
    animation-delay: -1.8s;
}

.art-card b {
    color: var(--ink);
    font-size: 13px;
}

.art-card span {
    color: var(--ink4);
    font-size: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    transition: transform .15s, box-shadow .15s, background .15s, border-color .15s, color .15s;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.btn.primary {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-green);
}

.btn.primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 18px 40px rgba(31, 195, 114, .32), 0 6px 16px rgba(31, 195, 114, .2);
}

.btn.secondary {
    background: #fff;
    color: var(--ink2);
    border-color: var(--line);
    box-shadow: var(--shadow-sm);
}

.btn.secondary:hover {
    color: var(--ink);
    border-color: rgba(31, 195, 114, .45);
    background: var(--primary-softer);
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.pain-section {
    padding: 78px 0;
    border-top: 1px solid var(--line2);
    border-bottom: 1px solid var(--line2);
    background: #fff;
}

.split-copy {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0 0 16px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .02em;
}

h2 {
    margin: 0;
    color: var(--ink);
    font-size: 40px;
    font-weight: 700;
    line-height: 1.18;
}

.copy-stack {
    display: grid;
    gap: 14px;
}

.pain-points {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 6px;
}

.pain-points span {
    display: inline-flex;
    min-height: 32px;
    align-items: center;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--bg-soft);
    color: var(--ink2);
    font-size: 13px;
    font-weight: 600;
}

.copy-stack p,
.section-head p,
.product-copy > p {
    margin: 0;
    color: var(--ink3);
    font-size: 16px;
}

.section {
    padding: 100px 0;
}

.wechat-section {
    background:
            linear-gradient(180deg, #fff 0%, #fff 58%, var(--bg-soft) 100%);
}

.wechat-layout {
    display: grid;
    grid-template-columns: .82fr 1.18fr;
    gap: 54px;
    align-items: center;
}

.wechat-copy {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.wechat-copy p {
    margin: 0;
    color: var(--ink3);
    font-size: 16px;
}

.wechat-list {
    display: grid;
    gap: 12px;
    margin-top: 8px;
}

.wechat-list div {
    position: relative;
    padding: 16px 16px 16px 42px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.wechat-list div:before {
    content: "";
    position: absolute;
    top: 22px;
    left: 18px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 6px var(--primary-soft);
}

.wechat-list b,
.wechat-list span {
    display: block;
}

.wechat-list b {
    color: var(--ink);
    font-size: 15px;
    line-height: 1.35;
}

.wechat-list span {
    margin-top: 5px;
    color: var(--ink3);
    font-size: 13px;
}

.wechat-visual {
    margin: 0;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: #fff;
    box-shadow: var(--shadow-md);
}

.wechat-visual img {
    width: 100%;
    border: 1px solid rgba(31, 195, 114, .16);
    border-radius: 18px;
    background: var(--bg-soft);
}

.wechat-visual figcaption {
    margin-top: 12px;
    color: var(--ink4);
    font-size: 12px;
}

.wechat-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 22px;
}

.wechat-steps article {
    min-height: 174px;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.wechat-steps span {
    display: inline-flex;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 11px;
    background: var(--ink);
    color: #fff;
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 800;
}

.wechat-steps h3 {
    margin: 18px 0 8px;
    color: var(--ink);
    font-size: 17px;
}

.wechat-steps p {
    margin: 0;
    color: var(--ink3);
    font-size: 13px;
    line-height: 1.65;
}

.section-head {
    max-width: 760px;
    margin-bottom: 48px;
}

.section-head.center {
    text-align: center;
    margin-right: auto;
    margin-left: auto;
}

.section-head p {
    margin-top: 14px;
}

.feature-section,
.faq-section {
    background: var(--bg-soft);
}

.capability-showcase {
    display: grid;
    grid-template-columns: .82fr 1.18fr;
    gap: 42px;
    align-items: center;
    margin-bottom: 34px;
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background:
            radial-gradient(ellipse 360px 180px at 4% 0%, rgba(31, 195, 114, .10), transparent 70%),
            #fff;
    box-shadow: var(--shadow-sm);
}

.capability-copy h3 {
    margin: 0 0 14px;
    color: var(--ink);
    font-size: 30px;
    font-weight: 700;
    line-height: 1.2;
}

.capability-copy > p {
    margin: 0;
    color: var(--ink3);
    font-size: 15px;
}

.capability-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 24px;
}

.capability-metrics div {
    min-height: 82px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--bg-soft);
}

.capability-metrics b,
.capability-metrics span {
    display: block;
}

.capability-metrics b {
    color: var(--primary-dark);
    font-size: 20px;
    line-height: 1.15;
}

.capability-metrics span {
    margin-top: 6px;
    color: var(--ink4);
    font-size: 12px;
}

.capability-visual {
    margin: 0;
}

.capability-visual img {
    width: 100%;
    border: 1px solid rgba(31, 195, 114, .14);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 18px 44px rgba(15, 26, 20, .08);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.capability-board {
    grid-template-columns: 1.18fr .9fr .9fr;
    align-items: stretch;
}

.feature-card {
    display: flex;
    flex-direction: column;
    min-height: 392px;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: transform .2s, box-shadow .2s, border-color .2s;
}

.feature-card.large {
    grid-column: span 2;
    background:
            radial-gradient(circle at 100% 0%, rgba(31, 195, 114, .14), transparent 34%),
            linear-gradient(180deg, #fff, var(--primary-softer));
}

.feature-card.large h3 {
    font-size: 22px;
}

.feature-card.large p {
    max-width: 620px;
    font-size: 14px;
}

.feature-card:last-child {
    grid-column: span 3;
    min-height: 238px;
    background:
            linear-gradient(135deg, #fff 0%, #fff 54%, var(--violet-soft) 100%);
}

.feature-card:last-child p {
    max-width: 760px;
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(31, 195, 114, .4);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    border-radius: 11px;
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.feature-icon svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.feature-icon.green {
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.feature-icon.amber {
    background: var(--amber-soft);
    color: #b26b00;
}

.feature-icon.blue {
    background: var(--blue-soft);
    color: var(--blue);
}

.feature-icon.black {
    background: #eef1ef;
    color: var(--ink);
}

.feature-icon.red {
    background: var(--rose-soft);
    color: var(--rose);
}

.feature-icon.purple {
    background: var(--violet-soft);
    color: var(--violet);
}

.feature-card h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 8px;
    color: var(--ink);
    font-size: 17px;
    font-weight: 600;
}

.feature-card p {
    margin: 0;
    color: var(--ink3);
    font-size: 13px;
    line-height: 1.65;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0 0;
}

.feature-tags span {
    display: inline-flex;
    min-height: 26px;
    align-items: center;
    padding: 0 10px;
    border: 1px solid rgba(31, 195, 114, .20);
    border-radius: 999px;
    background: var(--primary-softer);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
}

.feature-card ul {
    display: grid;
    gap: 8px;
    margin: 18px 0 0;
    padding: 18px 0 0;
    border-top: 1px solid var(--line2);
    list-style: none;
    color: var(--ink2);
    font-size: 12px;
}

.feature-card li {
    position: relative;
    padding-left: 16px;
}

.feature-card li:before {
    content: "";
    position: absolute;
    top: .72em;
    left: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.product-grid {
    display: grid;
    grid-template-columns: .82fr 1.18fr;
    gap: 64px;
    align-items: center;
}

.product-copy {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.product-points {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}

.product-points div {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    color: var(--ink2);
    font-size: 14px;
}

.product-points div:before {
    content: "";
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    margin-top: 1px;
    border-radius: 50%;
    background: var(--primary-soft);
    box-shadow: inset 0 0 0 6px #fff, 0 0 0 1px rgba(31, 195, 114, .24);
}

.product-points b {
    display: block;
    color: var(--ink);
    font-weight: 600;
}

.product-points span {
    display: block;
    color: var(--ink3);
    font-size: 13px;
}

.product-shot {
    margin: 0;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, var(--primary-softer), #fff);
    box-shadow: var(--shadow-md);
}

.product-shot img {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
}

.product-shot figcaption {
    margin-top: 12px;
    color: var(--ink4);
    font-size: 12px;
}

.workflow-section {
    position: relative;
    overflow: hidden;
    background:
            radial-gradient(ellipse 620px 260px at 88% 12%, rgba(31, 195, 114, .09), transparent 62%),
            linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
}

.workflow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.workflow article {
    position: relative;
    min-height: 260px;
    padding: 28px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.workflow article:before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), rgba(31, 195, 114, .18));
}

.workflow article:after {
    content: "";
    position: absolute;
    right: -42px;
    bottom: -42px;
    width: 126px;
    height: 126px;
    border-radius: 50%;
    background: var(--primary-soft);
}

.workflow span {
    position: relative;
    z-index: 1;
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 800;
}

.workflow h3 {
    position: relative;
    z-index: 1;
    margin: 78px 0 10px;
    color: var(--ink);
    font-size: 18px;
}

.workflow p {
    position: relative;
    z-index: 1;
    margin: 0;
    color: var(--ink3);
    font-size: 13px;
}

.results-section {
    background: #fff;
}

.results-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: center;
    padding: 48px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: var(--bg-soft);
}

.results-grid h2 {
    margin-bottom: 12px;
}

.result-cards {
    display: grid;
    gap: 14px;
}

.result-cards div {
    position: relative;
    min-height: 132px;
    padding: 22px 22px 22px 78px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.result-cards div:before {
    content: "";
    position: absolute;
    top: -40px;
    right: -20px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--primary-soft);
}

.result-cards span {
    position: absolute;
    top: 22px;
    left: 22px;
    display: inline-flex;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 800;
}

.result-cards b {
    position: relative;
    display: block;
    color: var(--ink);
    font-size: 17px;
    font-weight: 700;
}

.result-cards p {
    position: relative;
    margin: 8px 0 0;
    color: var(--ink3);
    font-size: 13px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 760px;
    margin: 0 auto;
}

.faq-item {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
    transition: box-shadow .15s;
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-item button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 22px;
    border: 0;
    background: transparent;
    color: var(--ink);
    text-align: left;
    font-size: 15px;
    font-weight: 600;
}

.faq-item button span {
    position: relative;
    width: 22px;
    height: 22px;
    flex: 0 0 auto;
    border-radius: 6px;
    background: var(--bg-soft);
    transition: transform .2s, background .2s;
}

.faq-item button span:before,
.faq-item button span:after {
    content: "";
    position: absolute;
    top: 10px;
    left: 6px;
    width: 10px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary-dark);
}

.faq-item button span:after {
    transform: rotate(90deg);
    transition: transform .2s;
}

.faq-item.open button span {
    background: var(--primary-soft);
    transform: rotate(45deg);
}

.faq-item.open button span:after {
    transform: rotate(0);
}

.faq-item p {
    max-height: 0;
    overflow: hidden;
    margin: 0;
    padding: 0 22px;
    color: var(--ink3);
    font-size: 14px;
    line-height: 1.7;
    transition: max-height .25s ease, padding .25s ease;
}

.faq-item.open p {
    max-height: 240px;
    padding: 0 22px 18px;
}

.site-footer {
    padding: 56px 0 32px;
    border-top: 1px solid var(--line);
    background: #fff;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    color: var(--ink4);
    font-size: 12px;
}

.site-footer p {
    margin: 0;
}

@media (max-width: 960px) {
    .hero-title {
        font-size: 44px;
    }

    .hero-layout,
    .split-copy,
    .product-grid,
    .wechat-layout,
    .capability-showcase,
    .results-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        text-align: center;
    }

    .hero-subtitle,
    .hero-proof {
        margin-right: auto;
        margin-left: auto;
    }

    .hero-actions {
        justify-content: center;
    }

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

    .wechat-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card.large {
        grid-column: span 2;
    }

    .feature-card:last-child {
        grid-column: span 2;
    }

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

}

@media (max-width: 640px) {
    .container {
        padding: 0 18px;
    }

    .site-header {
        height: 60px;
        padding: 0 16px;
    }

    .brand {
        font-size: 15px;
    }

    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: fixed;
        top: 60px;
        right: 0;
        left: 0;
        display: grid;
        gap: 4px;
        justify-content: stretch;
        padding: 10px 16px 18px;
        border-bottom: 1px solid var(--line);
        background: rgba(255, 255, 255, .98);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-120%);
        transition: opacity .22s, transform .22s;
    }

    .site-nav.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .site-nav a {
        display: flex;
    }

    .site-nav a {
        min-height: 44px;
        align-items: center;
    }

    .contact-entry {
        margin-left: 0;
    }

    .use-action {
        width: 100%;
        min-height: 44px;
    }

    .contact-popover {
        position: static;
        width: 100%;
        max-height: 0;
        margin-top: 0;
        padding: 0 12px;
        overflow: hidden;
        box-shadow: none;
        opacity: 0;
        transform: none;
        transition: opacity .18s, max-height .22s, margin-top .22s, padding .22s;
    }

    .contact-popover:before {
        display: none;
    }

    .contact-entry:hover .contact-popover,
    .contact-entry:focus-within .contact-popover,
    .contact-entry.open .contact-popover {
        max-height: 560px;
        margin-top: 8px;
        padding: 12px;
        opacity: 1;
        transform: none;
    }

    .hero {
        padding: 54px 0 40px;
    }

    .hero-pill {
        max-width: 100%;
        align-items: flex-start;
        border-radius: 14px;
        text-align: left;
    }

    .hero-title {
        font-size: 34px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

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

    .hero-proof div {
        padding: 12px 14px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .hero-art {
        margin-top: 8px;
    }

    .hero-art > img {
        border-radius: 18px;
    }

    .art-card {
        display: none;
    }

    .pain-section,
    .section {
        padding: 64px 0;
    }

    h2 {
        font-size: 30px;
    }

    .capability-showcase {
        padding: 20px;
        gap: 24px;
    }

    .wechat-visual {
        padding: 12px;
    }

    .wechat-steps {
        grid-template-columns: 1fr;
    }

    .wechat-steps article {
        min-height: auto;
    }

    .capability-copy h3 {
        font-size: 24px;
    }

    .capability-metrics {
        grid-template-columns: 1fr;
    }

    .feature-grid,
    .workflow,
    .result-cards {
        grid-template-columns: 1fr;
    }

    .feature-card.large {
        grid-column: span 1;
    }

    .feature-card:last-child {
        grid-column: span 1;
    }

    .feature-card,
    .workflow article {
        min-height: auto;
    }

    .workflow h3 {
        margin-top: 42px;
    }

    .results-grid {
        padding: 28px 20px;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}