@charset "utf-8";

:root {
    --teal: #2db9b9;
    --teal-dark: #08606b;
    --deep: #073541;
    --ink: #183b4a;
    --muted: #6f8b96;
    --page: #f4fbfb;
    --line: #dceeee;
    --shadow: 0 18px 55px rgba(16, 83, 95, .12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-width: 320px;
    background: var(--page);
    color: var(--ink);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.6;
}

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

.home-page {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    background: radial-gradient(circle at 6% 6%, rgba(45, 185, 185, .12), transparent 25%), var(--page);
}

.tech-grid,
.particle-layer { position: fixed; inset: 0; pointer-events: none; }

.tech-grid {
    z-index: 0;
    opacity: .42;
    background-image: linear-gradient(rgba(45, 185, 185, .1) 1px, transparent 1px), linear-gradient(90deg, rgba(45, 185, 185, .1) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, #000, transparent 75%);
}

.particle-layer { z-index: 1; width: 100%; height: 100%; opacity: .62; }
.site-header, .site-main, .site-footer { position: relative; z-index: 2; }

.site-header {
    display: flex;
    width: min(1240px, calc(100% - 48px));
    min-height: 82px;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    margin: 0 auto;
    border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 11px; }
.brand-mark { display: grid; width: 45px; height: 45px; place-items: center; border: 1px solid rgba(45, 185, 185, .4); border-radius: 13px; background: #fff; box-shadow: 0 8px 20px rgba(45, 185, 185, .14); }
.brand-mark img { width: 35px; height: 35px; object-fit: contain; }
.brand-name { display: block; color: var(--deep); font-size: 17px; font-weight: 800; letter-spacing: .08em; }
.brand-subtitle { display: block; color: #94adb5; font-size: 10px; letter-spacing: .13em; }

.main-nav { display: flex; align-items: center; gap: 3px; }
.main-nav a { padding: 8px 12px; border-radius: 8px; color: #53717c; font-size: 14px; transition: .2s ease; }
.main-nav a:hover, .main-nav a:focus-visible { background: rgba(45, 185, 185, .1); color: var(--teal-dark); outline: none; }

.header-user { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 10px; color: #58727d; font-size: 13px; white-space: nowrap; }
.header-user a { color: var(--teal-dark); }
.header-user img { width: 29px; height: 29px; border-radius: 50%; object-fit: cover; vertical-align: middle; }
.login-button { padding: 8px 16px; border: 1px solid rgba(45, 185, 185, .58); border-radius: 999px; color: var(--teal-dark) !important; font-weight: 700; }

.site-main { width: min(1240px, calc(100% - 48px)); margin: 0 auto; }

.hero {
    position: relative;
    display: grid;
    min-height: 580px;
    grid-template-columns: minmax(0, 1.02fr) minmax(370px, .98fr);
    align-items: center;
    gap: 45px;
    margin-top: 34px;
    padding: 70px 76px;
    overflow: hidden;
    border-radius: 30px;
    background: linear-gradient(120deg, #063843 0%, #08606b 47%, #2db9b9 100%);
    box-shadow: 0 25px 80px rgba(8, 96, 107, .2);
}

.hero::before {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, .065) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .065) 1px, transparent 1px);
    background-size: 50px 50px;
    content: "";
    mask-image: linear-gradient(90deg, #000, transparent 90%);
}

.hero-copy, .hero-visual { position: relative; z-index: 1; }
.hero-kicker, .section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--teal); font-size: 11px; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
.hero-kicker { color: #9af4ed; }
.hero-kicker::before, .section-kicker::before { width: 20px; height: 1px; background: currentColor; content: ""; }
.hero h1 { max-width: 680px; margin: 17px 0 18px; color: #fff; font-size: clamp(40px, 5vw, 70px); line-height: 1.12; letter-spacing: -.05em; }
.hero h1 em { color: #99f3ec; font-style: normal; text-shadow: 0 0 32px rgba(153, 243, 236, .3); }
.hero-lead { max-width: 590px; margin: 0; color: rgba(235, 255, 254, .78); font-size: 16px; line-height: 1.9; }

.announcement { display: flex; width: fit-content; max-width: 100%; align-items: center; gap: 9px; margin-bottom: 25px; padding: 9px 13px; border: 1px solid rgba(255, 218, 133, .63); border-radius: 10px; background: rgba(255, 184, 70, .16); color: #ffe7af; font-size: 13px; }
.announcement strong { color: #ffd16b; font-size: 14px; }
.announcement a { margin-left: 5px; color: #fff; font-weight: 700; }
.announcement a:hover { color: #ffdc85; }
.announcement-dot { width: 8px; height: 8px; border-radius: 50%; background: #ffd16b; box-shadow: 0 0 12px #ffd16b; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid rgba(154, 243, 236, .48); border-radius: 9px; font-size: 14px; font-weight: 700; transition: .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); outline: none; }
.button-primary { border-color: #9af4ed; background: #9af4ed; color: #073541; box-shadow: 0 10px 25px rgba(0, 38, 46, .2); }
.button-primary:hover, .button-primary:focus-visible { background: #c0fff9; }
.button-ghost { background: rgba(2, 44, 54, .18); color: #f0ffff; }
.button-ghost:hover, .button-ghost:focus-visible { background: rgba(255, 255, 255, .13); }

.hero-visual { min-height: 390px; }
.visual-orbit { position: absolute; inset: 9% 3% 8%; border: 1px solid rgba(187, 255, 248, .48); border-radius: 47% 53% 49% 51%; transform: rotate(-18deg); }
.visual-orbit::before, .visual-orbit::after { position: absolute; inset: 13%; border: 1px dashed rgba(191, 255, 249, .34); border-radius: 50%; content: ""; transform: rotate(54deg); }
.visual-orbit::after { inset: 26%; border-color: rgba(255, 222, 141, .43); transform: rotate(-30deg); }
.visual-core { position: absolute; top: 50%; left: 50%; display: grid; width: 166px; height: 166px; place-items: center; border: 1px solid rgba(190, 255, 249, .85); border-radius: 50%; background: radial-gradient(circle, rgba(102, 223, 214, .7), rgba(5, 65, 76, .8) 70%); box-shadow: 0 0 0 17px rgba(178, 255, 248, .08), 0 0 70px rgba(126, 245, 231, .4); transform: translate(-50%, -50%); }
.visual-core img { width: 85px; height: 85px; object-fit: contain; filter: drop-shadow(0 0 14px rgba(211, 255, 249, .48)); }
.visual-card { position: absolute; display: flex; min-width: 160px; align-items: center; gap: 10px; padding: 12px 14px; border: 1px solid rgba(225, 255, 252, .62); border-radius: 12px; background: rgba(240, 255, 254, .92); box-shadow: 0 18px 35px rgba(0, 41, 51, .25); color: var(--deep); }
.visual-card b { display: block; font-size: 14px; }
.visual-card small { display: block; color: #6b8b93; font-size: 11px; }
.visual-card-icon { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 9px; background: rgba(45, 185, 185, .15); color: var(--teal-dark); font-size: 18px; font-weight: 800; }
.visual-card.r-card { top: 14%; left: 0; }
.visual-card.a-card { right: 0; bottom: 14%; }
.visual-signal { position: absolute; right: 19%; top: 3%; color: #ffe29c; font-family: monospace; font-size: 10px; letter-spacing: .12em; }

.section { padding: 82px 0 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.section-kicker { color: var(--teal-dark); }
.section-heading h2 { margin: 9px 0 0; color: var(--deep); font-size: clamp(28px, 3.3vw, 42px); line-height: 1.18; letter-spacing: -.04em; }
.section-heading p { max-width: 430px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.85; text-align: right; }

.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.product-card { position: relative; min-height: 308px; padding: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: 17px; background: #fff; box-shadow: var(--shadow); }
.product-card::after { position: absolute; right: -55px; bottom: -73px; width: 220px; height: 220px; border: 1px solid rgba(45, 185, 185, .2); border-radius: 50%; box-shadow: 0 0 0 25px rgba(45, 185, 185, .045), 0 0 0 55px rgba(45, 185, 185, .026); content: ""; }
.product-card.aku { background: linear-gradient(140deg, #fff, #f0fbfa); }
.product-top { display: flex; align-items: center; justify-content: space-between; }
.product-index { color: #8eabb3; font-family: monospace; font-size: 11px; letter-spacing: .14em; }
.product-icon { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid rgba(45, 185, 185, .33); border-radius: 13px; background: rgba(45, 185, 185, .1); color: var(--teal-dark); font-size: 22px; font-weight: 800; }
.product-card h3 { margin: 22px 0 8px; color: var(--deep); font-size: 26px; }
.product-card p { max-width: 480px; margin: 0; color: #6e8993; font-size: 14px; line-height: 1.85; }
.product-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.product-meta span { padding: 4px 9px; border: 1px solid #cde9e8; border-radius: 999px; color: var(--teal-dark); font-size: 11px; }
.product-card .product-link { position: relative; z-index: 1; display: inline-flex; margin-top: 22px; color: var(--teal-dark); font-size: 13px; font-weight: 800; }
.product-card .product-link:hover { color: #0ca0a1; }

.resource-section { padding-top: 76px; }
.resource-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 17px; }
.resource-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.resource-tab { padding: 7px 13px; border: 1px solid #cde9e8; border-radius: 999px; background: #fff; color: #6b8992; cursor: pointer; font: inherit; font-size: 12px; transition: .2s ease; }
.resource-tab:hover, .resource-tab:focus-visible, .resource-tab.is-active { border-color: var(--teal); background: var(--teal); color: #fff; outline: none; }
.resource-more { flex: 0 0 auto; color: var(--teal-dark); font-size: 13px; font-weight: 800; }
.resource-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; min-height: 112px; }
.resource-item { display: flex; min-width: 0; align-items: flex-start; gap: 13px; padding: 17px; border: 1px solid var(--line); border-radius: 13px; background: #fff; box-shadow: 0 9px 26px rgba(16, 83, 95, .06); }
.resource-avatar { display: grid; flex: 0 0 auto; width: 43px; height: 43px; place-items: center; border-radius: 12px; background: var(--teal); color: #fff; font-size: 20px; font-weight: 800; }
.resource-content { min-width: 0; flex: 1; }
.resource-content h3 { overflow: hidden; margin: 0 0 4px; color: var(--deep); font-size: 16px; text-overflow: ellipsis; white-space: nowrap; }
.resource-content p { display: -webkit-box; overflow: hidden; margin: 0; color: #718b94; font-size: 12px; line-height: 1.6; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.resource-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 7px; color: #99aeb4; font-size: 11px; }
.resource-meta span { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.resource-action { flex: 0 0 auto; align-self: center; font-size: 12px; font-weight: 700; }
.resource-action a { color: var(--teal-dark); }
.resource-loading, .resource-empty { grid-column: 1 / -1; padding: 28px; border: 1px dashed #c8e5e4; border-radius: 13px; color: #819ba3; text-align: center; }

.link-section { padding-top: 76px; }
.link-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.link-card { display: flex; min-height: 118px; flex-direction: column; justify-content: space-between; padding: 17px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .82); box-shadow: 0 9px 26px rgba(16, 83, 95, .06); transition: .2s ease; }
.link-card:hover, .link-card:focus-visible { border-color: rgba(45, 185, 185, .58); background: #fff; box-shadow: 0 15px 30px rgba(16, 83, 95, .12); transform: translateY(-3px); outline: none; }
.link-card strong { color: var(--deep); font-size: 14px; }
.link-card span { color: #819ca4; font-size: 11px; }
.link-arrow { align-self: end; color: var(--teal-dark); font-size: 18px; }

.about-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; padding: 35px; border: 1px solid rgba(45, 185, 185, .28); border-radius: 18px; background: linear-gradient(120deg, #e3f8f6, #fff); box-shadow: var(--shadow); }
.about-strip h2 { margin: 8px 0 10px; color: var(--deep); font-size: 28px; line-height: 1.3; }
.about-strip p { max-width: 650px; margin: 0; color: #6f8b94; font-size: 14px; line-height: 1.9; }
.about-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.about-point { padding: 15px; border-left: 2px solid var(--teal); background: rgba(255, 255, 255, .72); }
.about-point b { display: block; color: var(--teal-dark); font-size: 19px; }
.about-point span { color: #78929b; font-size: 12px; }

.site-footer { width: min(1240px, calc(100% - 48px)); margin: 70px auto 0; padding: 23px 0 30px; border-top: 1px solid var(--line); color: #77939b; font-size: 12px; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.footer-row a { color: var(--teal-dark); }

@media (max-width: 1060px) {
    .site-header { flex-wrap: wrap; gap: 10px; padding: 13px 0; }
    .main-nav { order: 3; width: 100%; justify-content: center; }
    .hero { grid-template-columns: 1fr; gap: 8px; padding: 60px 54px 30px; }
    .hero-visual { min-height: 345px; }
    .link-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 650px) {
    .site-header, .site-main, .site-footer { width: min(100% - 30px, 1240px); }
    .brand-subtitle { display: none; }
    .main-nav { justify-content: flex-start; overflow-x: auto; }
    .main-nav a { padding: 7px 9px; font-size: 12px; white-space: nowrap; }
    .hero { min-height: 0; margin-top: 20px; padding: 36px 22px 16px; border-radius: 22px; }
    .hero h1 { font-size: 41px; }
    .hero-lead { font-size: 14px; }
    .announcement { align-items: flex-start; flex-wrap: wrap; font-size: 12px; }
    .hero-visual { min-height: 290px; transform: scale(.9); transform-origin: center; }
    .visual-card { min-width: 136px; padding: 9px 10px; }
    .visual-card.r-card { left: -5px; }
    .visual-card.a-card { right: -5px; }
    .section { padding-top: 54px; }
    .section-heading { display: block; }
    .section-heading p { margin-top: 12px; text-align: left; }
    .product-grid { grid-template-columns: 1fr; }
    .product-card { min-height: 0; padding: 23px; }
    .resource-toolbar { align-items: flex-start; flex-direction: column; }
    .resource-list { grid-template-columns: 1fr; }
    .resource-action { display: none; }
    .link-section { padding-top: 54px; }
    .link-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .about-strip { grid-template-columns: 1fr; padding: 23px; }
    .footer-row { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}