:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#10243e;background:#f7faff;line-height:1.5;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f7faff 0%,#fff 72%);min-width:320px}.shell{width:min(1120px,calc(100% - 40px));margin:0 auto;padding:62px 0 36px}.hero{padding:10px 0 54px}.brand-lockup{display:flex;align-items:center;gap:18px}.brand-mark{width:68px;height:68px;border-radius:18px;display:grid;place-items:center;background:#e9f1ff;border:1px solid #cbdcff;overflow:hidden}.brand-mark img{width:60px;height:60px;object-fit:cover}.eyebrow{margin:0 0 3px;color:#4a73bf;font-size:14px;font-weight:700;letter-spacing:.08em}.hero h1{margin:0;font-size:clamp(28px,4vw,46px);line-height:1.16;letter-spacing:0;font-weight:760;color:#112c52}.hero-copy{margin:22px 0 24px;color:#59708e;font-size:17px}.primary-link{display:inline-flex;align-items:center;gap:14px;padding:13px 18px;border-radius:12px;background:#1e5fd0;color:#fff;text-decoration:none;font-weight:700;box-shadow:0 8px 18px rgba(30,95,208,.18);transition:transform .2s,box-shadow .2s}.primary-link:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,95,208,.24)}.section-block{padding:30px 0 10px}.section-heading{display:flex;align-items:center;gap:12px;margin-bottom:18px}.section-kicker{font-size:12px;color:#6990d1;font-weight:800;letter-spacing:.08em}.section-heading h2{margin:0;font-size:22px;color:#18365e;letter-spacing:0}.intent-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.intent-card,.tool-card,.secondary-card{position:relative;text-decoration:none;color:inherit;background:#fff;border:1px solid #dbe6f5;border-radius:16px;box-shadow:0 8px 24px rgba(43,76,121,.06);transition:transform .2s,border-color .2s,box-shadow .2s}.intent-card{min-height:220px;padding:20px;display:flex;flex-direction:column}.intent-card:hover,.tool-card:hover,.secondary-card:hover{transform:translateY(-3px);border-color:#9ab8ee;box-shadow:0 14px 30px rgba(43,76,121,.12)}.card-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;font-size:21px;font-weight:800;margin-bottom:20px}.accent-blue .card-icon{background:#e5efff;color:#2d69d4}.accent-green .card-icon{background:#e3f7ed;color:#21865a}.accent-violet .card-icon{background:#efe9ff;color:#7656c9}.accent-orange .card-icon{background:#fff0dc;color:#be6b16}.card-title{font-size:16px;font-weight:700;color:#60738d}.card-product{margin-top:4px;font-size:19px;font-weight:760;color:#15345d}.card-desc{margin-top:10px;font-size:14px;color:#71839a;line-height:1.55}.card-cta{margin-top:auto;padding-top:16px;font-size:14px;font-weight:700;color:#2b63c4}.card-cta b{margin-left:5px}.tools-section{padding-top:52px}.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.tool-card{display:grid;grid-template-columns:170px 1fr;overflow:hidden;min-height:224px}.tool-image{background:#eef4ff;display:flex;justify-content:center;align-items:flex-end;overflow:hidden;padding-top:12px}.tool-image img{width:128px;max-height:218px;object-fit:cover;object-position:top;border-radius:16px 16px 0 0;box-shadow:0 8px 18px rgba(34,67,112,.15)}.tool-body{padding:24px 22px;display:flex;flex-direction:column}.tool-label{font-size:12px;font-weight:800;color:#6688c2;letter-spacing:.06em}.tool-body h3{margin:7px 0 8px;font-size:22px;color:#17365f}.tool-body p{margin:0;color:#6d8098;font-size:15px}.flow-section{padding-top:52px}.flow{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border:1px solid #dbe6f5;background:#fff;border-radius:16px}.flow div{display:flex;align-items:center;gap:10px;color:#31537d;font-weight:700}.flow b{font-size:12px;color:#7d9dd4}.flow i{font-style:normal;color:#9eb5d4;font-size:20px}.bottom-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;padding-top:28px}.secondary-card{padding:18px 20px;display:grid;grid-template-columns:1fr auto;column-gap:14px}.secondary-card span{grid-column:1/-1;color:#6e8dc2;font-size:12px;font-weight:800}.secondary-card strong{font-size:16px;color:#24466f}.secondary-card small{grid-column:1;color:#7b8ca1;margin-top:3px}.secondary-card>b{grid-column:2;grid-row:2/4;align-self:center;color:#2b63c4;font-size:18px}footer{display:flex;justify-content:space-between;gap:14px;padding-top:38px;color:#91a0b3;font-size:13px}footer a{color:#6b84aa;text-decoration:none} @media(max-width:820px){.shell{width:min(100% - 28px,600px);padding-top:34px}.hero{padding-bottom:34px}.intent-grid{grid-template-columns:repeat(2,1fr)}.tool-card{grid-template-columns:126px 1fr}.tool-image img{width:104px}.tool-body{padding:18px 16px}.tool-body h3{font-size:19px}.flow{padding:16px;gap:7px}.flow div{display:flex;flex-direction:column;gap:3px;text-align:center;font-size:13px}.flow i{font-size:16px}}@media(max-width:520px){.shell{width:calc(100% - 24px)}.brand-mark{width:58px;height:58px;border-radius:15px}.brand-mark img{width:52px;height:52px}.hero h1{font-size:30px}.hero-copy{font-size:15px;margin:16px 0 20px}.intent-grid,.tool-grid,.bottom-grid{grid-template-columns:1fr}.intent-card{min-height:194px}.tool-card{grid-template-columns:112px 1fr;min-height:190px}.tool-image img{width:94px}.tool-body p{font-size:14px}.flow{padding:14px 8px}.flow div{font-size:12px}.flow i{font-size:14px}footer{flex-direction:column;gap:7px}}

/* macOS desktop workspace theme */
:root[data-theme="macos"]{color:#1b2c43;background:#dce7f4}
:root[data-theme="macos"] body{background:radial-gradient(circle at 12% 0%,#f8fbff 0,#e6eef8 38%,#d7e3f0 100%)}
:root[data-theme="macos"] .shell{width:min(1180px,calc(100% - 34px));padding:30px 0 34px}
:root[data-theme="macos"] .hero{padding:0;margin-bottom:24px;background:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.92);border-radius:22px;box-shadow:0 18px 44px rgba(68,92,120,.15);padding:24px 28px 26px;backdrop-filter:blur(18px)}
:root[data-theme="macos"] .brand-lockup{gap:14px}
:root[data-theme="macos"] .brand-mark{width:58px;height:58px;border-radius:14px;background:#f4f8fd;border-color:#d8e3f0;box-shadow:inset 0 1px 0 #fff,0 5px 12px rgba(71,101,137,.1)}
:root[data-theme="macos"] .brand-mark img{width:50px;height:50px}
:root[data-theme="macos"] .eyebrow{color:#6a7f99;font-size:12px;letter-spacing:.1em}
:root[data-theme="macos"] .hero h1{font-size:clamp(27px,3.6vw,42px);color:#1c3554}
:root[data-theme="macos"] .hero-copy{margin:15px 0 20px;color:#71839a;font-size:16px}
:root[data-theme="macos"] .primary-link{padding:11px 15px;border-radius:10px;background:#2b6bd2;box-shadow:0 7px 16px rgba(43,107,210,.2)}
:root[data-theme="macos"] .section-block{padding:22px 0 8px}
:root[data-theme="macos"] .section-heading{margin-bottom:13px}
:root[data-theme="macos"] .section-kicker{color:#8b9db2;font-size:11px}
:root[data-theme="macos"] .section-heading h2{font-size:20px;color:#36516f}
:root[data-theme="macos"] .intent-grid{gap:12px}
:root[data-theme="macos"] .intent-card,.macos .tool-card,.macos .secondary-card{background:rgba(255,255,255,.78);border-color:rgba(255,255,255,.95);border-radius:14px;box-shadow:0 10px 24px rgba(66,91,122,.1);backdrop-filter:blur(16px)}
:root[data-theme="macos"] .intent-card{min-height:206px;padding:18px}
:root[data-theme="macos"] .intent-card::before,.macos .tool-card::before{content:"";position:absolute;left:14px;top:12px;width:7px;height:7px;border-radius:50%;background:#ff6258;box-shadow:11px 0 #ffbd2e,22px 0 #28c840;opacity:.9}
:root[data-theme="macos"] .intent-card .card-icon{margin-top:13px;width:32px;height:32px;border-radius:9px}
:root[data-theme="macos"] .card-title{font-size:14px;color:#7890aa}
:root[data-theme="macos"] .card-product{font-size:18px;color:#24486e}
:root[data-theme="macos"] .card-desc{font-size:13px;color:#7589a0}
:root[data-theme="macos"] .card-cta{font-size:13px;color:#3970c6}
:root[data-theme="macos"] .tool-grid{gap:12px}
:root[data-theme="macos"] .tool-card{min-height:214px;grid-template-columns:154px 1fr}
:root[data-theme="macos"] .tool-image{background:linear-gradient(145deg,#e5effb,#f8fbff);padding-top:17px}
:root[data-theme="macos"] .tool-image img{width:114px;border-radius:12px 12px 0 0;box-shadow:0 7px 16px rgba(47,79,116,.16)}
:root[data-theme="macos"] .tool-body{padding:22px 20px 18px}
:root[data-theme="macos"] .tool-label{color:#8297b0;font-size:11px}
:root[data-theme="macos"] .tool-body h3{font-size:20px;color:#26486e}
:root[data-theme="macos"] .tool-body p{font-size:14px;color:#7488a0}
:root[data-theme="macos"] .flow{padding:15px 20px;border-color:rgba(255,255,255,.95);background:rgba(255,255,255,.72);box-shadow:0 8px 22px rgba(66,91,122,.08);backdrop-filter:blur(14px)}
:root[data-theme="macos"] .flow div{color:#55708f;font-size:14px}
:root[data-theme="macos"] .flow i{color:#a4b8cf}
:root[data-theme="macos"] .secondary-card{padding:16px 18px}
:root[data-theme="macos"] .secondary-card span{color:#8398b0}
:root[data-theme="macos"] .secondary-card strong{color:#3b5877;font-size:15px}
:root[data-theme="macos"] .secondary-card small{color:#8495a8;font-size:12px}
:root[data-theme="macos"] footer{color:#8296ad}

/* Editorial color-block theme */
:root[data-theme="editorial"]{color:#17181d;background:#f0efe9}
:root[data-theme="editorial"] body{background:#f0efe9}
:root[data-theme="editorial"] .shell{width:min(1160px,calc(100% - 36px));padding:42px 0 34px}
:root[data-theme="editorial"] .hero{padding:26px 28px 30px;background:#17181d;border-radius:4px;color:#fff;position:relative;overflow:hidden}
:root[data-theme="editorial"] .hero::after{content:"WORK / THINK / MOVE";position:absolute;right:24px;bottom:18px;color:#b8ff2c;font-size:11px;font-weight:800;letter-spacing:.16em}
:root[data-theme="editorial"] .brand-lockup{gap:16px}
:root[data-theme="editorial"] .brand-mark{width:62px;height:62px;border-radius:4px;background:#b8ff2c;border:0}
:root[data-theme="editorial"] .brand-mark img{width:54px;height:54px}
:root[data-theme="editorial"] .eyebrow{color:#b8ff2c;font-size:12px;letter-spacing:.14em}
:root[data-theme="editorial"] .hero h1{color:#fff;font-size:clamp(30px,4vw,48px);letter-spacing:-.02em}
:root[data-theme="editorial"] .hero-copy{margin:17px 0 22px;color:#d1d1cd;font-size:16px;max-width:620px}
:root[data-theme="editorial"] .primary-link{border-radius:3px;padding:12px 16px;background:#8454f6;box-shadow:none}
:root[data-theme="editorial"] .section-block{padding:34px 0 8px}
:root[data-theme="editorial"] .section-heading{margin-bottom:16px;align-items:baseline}
:root[data-theme="editorial"] .section-kicker{color:#8454f6;font-size:11px;letter-spacing:.15em}
:root[data-theme="editorial"] .section-heading h2{font-size:24px;color:#17181d;font-weight:800}
:root[data-theme="editorial"] .intent-grid{grid-template-columns:repeat(2,1fr);gap:14px}
:root[data-theme="editorial"] .intent-card,.editorial .tool-card,.editorial .secondary-card{border-radius:4px;border:2px solid #17181d;box-shadow:5px 5px 0 #17181d;background:#fff}
:root[data-theme="editorial"] .intent-card{min-height:194px;padding:19px 20px}
:root[data-theme="editorial"] .intent-card:hover,:root[data-theme="editorial"] .tool-card:hover,:root[data-theme="editorial"] .secondary-card:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 #17181d}
:root[data-theme="editorial"] .card-icon{width:36px;height:36px;border-radius:3px;margin-bottom:18px;border:2px solid #17181d}
:root[data-theme="editorial"] .accent-blue .card-icon{background:#aee1ff;color:#17181d}.accent-green .card-icon{background:#b8ff2c;color:#17181d}.accent-violet .card-icon{background:#c9b5ff;color:#17181d}.accent-orange .card-icon{background:#ff9e7a;color:#17181d}
:root[data-theme="editorial"] .card-title{font-size:14px;color:#5f6268;font-weight:700}
:root[data-theme="editorial"] .card-product{font-size:21px;color:#17181d}
:root[data-theme="editorial"] .card-desc{font-size:14px;color:#44474d;line-height:1.5}
:root[data-theme="editorial"] .card-cta{font-size:13px;color:#8454f6}
:root[data-theme="editorial"] .tool-grid{gap:14px}
:root[data-theme="editorial"] .tool-card{min-height:220px;grid-template-columns:158px 1fr;overflow:hidden}
:root[data-theme="editorial"] .tool-image{background:#c9b5ff;padding-top:15px}
:root[data-theme="editorial"] .tool-card:nth-child(2) .tool-image{background:#b8ff2c}
:root[data-theme="editorial"] .tool-image img{width:116px;border-radius:2px 2px 0 0;box-shadow:5px 5px 0 rgba(23,24,29,.9)}
:root[data-theme="editorial"] .tool-body{padding:22px 20px 18px}
:root[data-theme="editorial"] .tool-label{color:#8454f6;font-size:11px;letter-spacing:.12em}
:root[data-theme="editorial"] .tool-body h3{font-size:21px;color:#17181d}
:root[data-theme="editorial"] .tool-body p{font-size:14px;color:#45484e}
:root[data-theme="editorial"] .flow{padding:18px 20px;border:2px solid #17181d;border-radius:4px;background:#fff;box-shadow:5px 5px 0 #17181d}
:root[data-theme="editorial"] .flow div{color:#17181d;font-size:14px}.flow b{color:#8454f6}.flow i{color:#17181d}
:root[data-theme="editorial"] .secondary-card{padding:17px 19px}
:root[data-theme="editorial"] .secondary-card span{color:#8454f6;font-size:11px;letter-spacing:.1em}.secondary-card strong{color:#17181d}.secondary-card small{color:#54575d}.secondary-card>b{color:#8454f6}
:root[data-theme="editorial"] footer{color:#65676c} :root[data-theme="editorial"] footer a{color:#8454f6}

@media(max-width:820px){:root[data-theme="macos"] .shell,:root[data-theme="editorial"] .shell{width:min(100% - 28px,620px);padding-top:25px}:root[data-theme="editorial"] .intent-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){:root[data-theme="macos"] .shell,:root[data-theme="editorial"] .shell{width:calc(100% - 24px)}:root[data-theme="macos"] .hero{padding:20px 18px 22px}:root[data-theme="macos"] .hero h1{font-size:29px}:root[data-theme="macos"] .tool-card{grid-template-columns:112px 1fr}:root[data-theme="macos"] .tool-image img{width:92px}:root[data-theme="editorial"] .hero{padding:21px 18px 25px}:root[data-theme="editorial"] .hero::after{display:none}:root[data-theme="editorial"] .hero h1{font-size:31px}:root[data-theme="editorial"] .intent-grid{grid-template-columns:1fr}:root[data-theme="editorial"] .intent-card{min-height:180px}:root[data-theme="editorial"] .tool-card{grid-template-columns:112px 1fr}:root[data-theme="editorial"] .tool-image img{width:90px}}

/* ===== Theme A: 轻白品牌感 ===== */
:root[data-theme="a"]{color:#0f1f33;background:#fbfcfe}
:root[data-theme="a"] body{background:#fbfcfe}
:root[data-theme="a"] .shell{width:min(1160px,calc(100% - 48px));padding:56px 0 40px}
:root[data-theme="a"] .hero{padding:8px 0 64px;display:grid;grid-template-columns:1fr auto;align-items:end;gap:24px}
:root[data-theme="a"] .brand-lockup{display:flex;align-items:center;gap:16px}
:root[data-theme="a"] .brand-mark{width:56px;height:56px;border-radius:16px;background:#eaf1fb;border:0;overflow:hidden}
:root[data-theme="a"] .brand-mark img{width:50px;height:50px}
:root[data-theme="a"] .eyebrow{margin:0 0 4px;color:#6d83a0;font-size:13px;font-weight:600;letter-spacing:.12em}
:root[data-theme="a"] .hero h1{margin:0;font-size:clamp(30px,4.2vw,44px);line-height:1.2;font-weight:750;color:#0e1e35;letter-spacing:-.02em}
:root[data-theme="a"] .hero-copy{grid-column:1/-1;margin:14px 0 0;color:#5f7188;font-size:16px;max-width:560px}
:root[data-theme="a"] .primary-link{grid-column:2;grid-row:1/3;align-self:center;padding:14px 22px;border-radius:14px;background:#1a5fd7;color:#fff;font-weight:650;font-size:15px;box-shadow:0 6px 16px rgba(26,95,215,.22)}
:root[data-theme="a"] .section-block{padding:26px 0 6px}
:root[data-theme="a"] .section-heading{margin-bottom:20px;align-items:baseline}
:root[data-theme="a"] .section-kicker{color:#8fa4bf;font-size:12px;font-weight:700;letter-spacing:.14em}
:root[data-theme="a"] .section-heading h2{font-size:21px;color:#243b59;font-weight:700}
:root[data-theme="a"] .intent-grid{grid-template-columns:repeat(4,1fr);gap:16px}
:root[data-theme="a"] .intent-card{min-height:230px;padding:22px;border-radius:18px;background:#fff;border:1px solid #e8eef5;box-shadow:0 2px 6px rgba(30,60,100,.04);transition:transform .25s,border-color .25s,box-shadow .25s}
:root[data-theme="a"] .intent-card:hover{transform:translateY(-4px);border-color:#b8cff0;box-shadow:0 12px 28px rgba(30,60,100,.09)}
:root[data-theme="a"] .card-icon{width:38px;height:38px;border-radius:11px;font-size:20px;margin-bottom:18px}
:root[data-theme="a"] .accent-blue .card-icon{background:#e7f0fe;color:#1a5fd7}.accent-green .card-icon{background:#e3f6ec;color:#1d8a5f}.accent-violet .card-icon{background:#f0eafe;color:#7a5cd6}.accent-orange .card-icon{background:#fdf0e3;color:#c26e1b}
:root[data-theme="a"] .card-title{font-size:14px;color:#7d8ea5;font-weight:600}
:root[data-theme="a"] .card-product{margin-top:5px;font-size:18px;font-weight:700;color:#13293f}
:root[data-theme="a"] .card-desc{margin-top:10px;font-size:14px;color:#6c7d93;line-height:1.6}
:root[data-theme="a"] .card-cta{padding-top:18px;font-size:14px;font-weight:650;color:#1a5fd7}
:root[data-theme="a"] .tools-section{padding-top:44px}
:root[data-theme="a"] .tool-grid{gap:18px}
:root[data-theme="a"] .tool-card{min-height:240px;border-radius:18px;background:#fff;border:1px solid #e8eef5;box-shadow:0 2px 6px rgba(30,60,100,.04);grid-template-columns:150px 1fr;overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s}
:root[data-theme="a"] .tool-card:hover{transform:translateY(-4px);border-color:#b8cff0;box-shadow:0 14px 30px rgba(30,60,100,.1)}
:root[data-theme="a"] .tool-image{background:#f2f6fc;padding-top:16px}
:root[data-theme="a"] .tool-image img{width:120px;border-radius:14px 14px 0 0;box-shadow:0 6px 14px rgba(30,60,100,.12)}
:root[data-theme="a"] .tool-body{padding:26px 24px 20px}
:root[data-theme="a"] .tool-label{font-size:11px;font-weight:700;color:#7a90ab;letter-spacing:.1em}
:root[data-theme="a"] .tool-body h3{margin:8px 0 8px;font-size:21px;color:#142a45;font-weight:700}
:root[data-theme="a"] .tool-body p{font-size:14px;color:#66788f}
:root[data-theme="a"] .flow{padding:18px 22px;border-radius:16px;background:#fff;border:1px solid #e8eef5;box-shadow:0 2px 6px rgba(30,60,100,.04)}
:root[data-theme="a"] .flow div{color:#3c546f;font-size:14px;font-weight:650}.flow b{color:#8fa4bf;font-size:11px}.flow i{color:#b8c8dc}
:root[data-theme="a"] .bottom-grid{gap:16px;padding-top:24px}
:root[data-theme="a"] .secondary-card{padding:20px 22px;border-radius:16px;background:#fff;border:1px solid #e8eef5;box-shadow:0 2px 6px rgba(30,60,100,.04);transition:transform .25s,border-color .25s,box-shadow .25s}
:root[data-theme="a"] .secondary-card:hover{transform:translateY(-3px);border-color:#b8cff0;box-shadow:0 10px 24px rgba(30,60,100,.08)}
:root[data-theme="a"] .secondary-card span{color:#7a90ab;font-size:11px;font-weight:700;letter-spacing:.1em}
:root[data-theme="a"] .secondary-card strong{font-size:16px;color:#1a3350;font-weight:650}
:root[data-theme="a"] .secondary-card small{color:#75879c;font-size:13px}
:root[data-theme="a"] .secondary-card>b{color:#1a5fd7;font-size:18px}
:root[data-theme="a"] footer{color:#8b9cb1;font-size:13px}
:root[data-theme="a"] footer a{color:#5b7ba3;text-decoration:none}

/* ===== Theme B: 编辑留白高级感 ===== */
:root[data-theme="b"]{color:#16181d;background:#f7f6f3}
:root[data-theme="b"] body{background:#f7f6f3}
:root[data-theme="b"] .shell{width:min(1120px,calc(100% - 56px));padding:72px 0 48px}
:root[data-theme="b"] .hero{padding:0 0 72px;border-bottom:1px solid #e5e2dc}
:root[data-theme="b"] .brand-lockup{flex-direction:column;align-items:flex-start;gap:20px}
:root[data-theme="b"] .brand-mark{width:64px;height:64px;border-radius:18px;background:#e9e5de;border:0;overflow:hidden}
:root[data-theme="b"] .brand-mark img{width:56px;height:56px}
:root[data-theme="b"] .eyebrow{margin:0;color:#8a857b;font-size:12px;font-weight:700;letter-spacing:.18em}
:root[data-theme="b"] .hero h1{margin:8px 0 0;font-size:clamp(34px,5vw,54px);line-height:1.12;font-weight:800;color:#16181d;letter-spacing:-.03em}
:root[data-theme="b"] .hero-copy{margin:20px 0 28px;color:#6e6a62;font-size:16px;max-width:520px}
:root[data-theme="b"] .primary-link{padding:15px 26px;border-radius:10px;background:#16181d;color:#fff;font-weight:650;font-size:15px;box-shadow:none}
:root[data-theme="b"] .section-block{padding:40px 0 8px}
:root[data-theme="b"] .section-heading{margin-bottom:24px}
:root[data-theme="b"] .section-kicker{color:#b0aa9f;font-size:11px;font-weight:800;letter-spacing:.16em}
:root[data-theme="b"] .section-heading h2{font-size:22px;color:#16181d;font-weight:750}
:root[data-theme="b"] .intent-grid{grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid #e5e2dc}
:root[data-theme="b"] .intent-card{min-height:210px;padding:28px 26px;border-radius:0;background:transparent;border:0;border-bottom:1px solid #e5e2dc;box-shadow:none;transition:background .25s}
:root[data-theme="b"] .intent-card:nth-child(odd){border-right:1px solid #e5e2dc}
:root[data-theme="b"] .intent-card:hover{background:#fff;transform:none;box-shadow:none}
:root[data-theme="b"] .card-icon{width:34px;height:34px;border-radius:9px;font-size:18px;margin-bottom:20px;background:#f0ede8;color:#4a4640}
:root[data-theme="b"] .card-title{font-size:13px;color:#8a857b;font-weight:600;letter-spacing:.02em}
:root[data-theme="b"] .card-product{margin-top:6px;font-size:19px;font-weight:750;color:#16181d}
:root[data-theme="b"] .card-desc{margin-top:10px;font-size:14px;color:#6e6a62;line-height:1.65}
:root[data-theme="b"] .card-cta{padding-top:20px;font-size:13px;font-weight:700;color:#16181d}
:root[data-theme="b"] .tools-section{padding-top:56px}
:root[data-theme="b"] .tool-grid{gap:0;border-top:1px solid #e5e2dc}
:root[data-theme="b"] .tool-card{min-height:260px;border-radius:0;background:transparent;border:0;border-bottom:1px solid #e5e2dc;box-shadow:none;grid-template-columns:140px 1fr;overflow:visible;transition:background .25s}
:root[data-theme="b"] .tool-card:first-child{border-right:1px solid #e5e2dc}
:root[data-theme="b"] .tool-card:hover{background:#fff;transform:none;box-shadow:none}
:root[data-theme="b"] .tool-image{background:transparent;padding:24px 0 0 24px}
:root[data-theme="b"] .tool-image img{width:110px;border-radius:12px 12px 0 0;box-shadow:0 4px 10px rgba(20,20,20,.1)}
:root[data-theme="b"] .tool-body{padding:28px 26px 24px}
:root[data-theme="b"] .tool-label{font-size:11px;font-weight:800;color:#8a857b;letter-spacing:.14em}
:root[data-theme="b"] .tool-body h3{margin:10px 0 10px;font-size:22px;color:#16181d;font-weight:750}
:root[data-theme="b"] .tool-body p{font-size:14px;color:#6e6a62}
:root[data-theme="b"] .flow{padding:20px 24px;border-radius:0;background:transparent;border:1px solid #e5e2dc;box-shadow:none}
:root[data-theme="b"] .flow div{color:#4a4640;font-size:14px;font-weight:650}.flow b{color:#b0aa9f;font-size:11px}.flow i{color:#c8c2b8}
:root[data-theme="b"] .bottom-grid{gap:0;padding-top:32px;border-top:1px solid #e5e2dc}
:root[data-theme="b"] .secondary-card{padding:24px 26px;border-radius:0;background:transparent;border:0;border-bottom:1px solid #e5e2dc;box-shadow:none;transition:background .25s}
:root[data-theme="b"] .secondary-card:first-child{border-right:1px solid #e5e2dc}
:root[data-theme="b"] .secondary-card:hover{background:#fff;transform:none;box-shadow:none}
:root[data-theme="b"] .secondary-card span{color:#8a857b;font-size:11px;font-weight:800;letter-spacing:.14em}
:root[data-theme="b"] .secondary-card strong{font-size:17px;color:#16181d;font-weight:700}
:root[data-theme="b"] .secondary-card small{color:#7a766e;font-size:13px}
:root[data-theme="b"] .secondary-card>b{color:#16181d;font-size:18px}
:root[data-theme="b"] footer{color:#8a857b;font-size:13px;padding-top:40px}
:root[data-theme="b"] footer a{color:#6e6a62;text-decoration:none}

/* ===== Theme C: macOS 桌面工作台 ===== */
:root[data-theme="c"]{color:#1e2c42;background:#dce6f2}
:root[data-theme="c"] body{background:linear-gradient(165deg,#eef4fb 0%,#e2ecf7 40%,#d3e0ef 100%);min-height:100vh}
:root[data-theme="c"] .shell{width:min(1140px,calc(100% - 48px));padding:84px 0 40px;position:relative}
:root[data-theme="c"] .shell::before{content:"职场有解  ·  产品导航";position:fixed;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;justify-content:center;height:38px;background:rgba(248,250,253,.7);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.75);box-shadow:0 1px 0 rgba(120,140,165,.14);color:#31445f;font-size:12.5px;font-weight:650;letter-spacing:.06em}
:root[data-theme="c"] .hero{padding:48px 32px 30px;background:rgba(255,255,255,.66);border:1px solid rgba(255,255,255,.92);border-radius:20px;box-shadow:0 24px 60px rgba(50,75,110,.18);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);position:relative;margin-bottom:36px}
:root[data-theme="c"] .hero::before{content:"";position:absolute;top:16px;left:20px;width:11px;height:11px;border-radius:50%;background:#ff5f57;box-shadow:18px 0 0 #febc2e,36px 0 0 #28c840}
:root[data-theme="c"] .hero::after{content:"产品导航";position:absolute;top:13px;left:0;right:0;text-align:center;color:#7c8ea8;font-size:12px;font-weight:600;letter-spacing:.05em}
:root[data-theme="c"] .brand-lockup{gap:16px}
:root[data-theme="c"] .brand-mark{width:62px;height:62px;border-radius:15px;background:linear-gradient(180deg,#f4f8fd,#e4edf8);border:1px solid rgba(255,255,255,.95);box-shadow:0 6px 14px rgba(50,75,110,.16),inset 0 1px 0 #fff;overflow:hidden}
:root[data-theme="c"] .brand-mark img{width:54px;height:54px}
:root[data-theme="c"] .eyebrow{margin:0 0 4px;color:#7a8ba0;font-size:13px;font-weight:650;letter-spacing:.1em}
:root[data-theme="c"] .hero h1{margin:0;font-size:clamp(28px,3.8vw,40px);line-height:1.2;font-weight:750;color:#1a2b42;letter-spacing:-.02em}
:root[data-theme="c"] .hero-copy{margin:16px 0 22px;color:#5f7186;font-size:15px;max-width:580px}
:root[data-theme="c"] .primary-link{padding:13px 20px;border-radius:12px;background:linear-gradient(180deg,#3b82f6,#2563eb);color:#fff;font-weight:650;font-size:14px;box-shadow:0 5px 14px rgba(37,99,235,.3),inset 0 1px 0 rgba(255,255,255,.25)}
:root[data-theme="c"] .section-block{padding:20px 0 4px}
:root[data-theme="c"] .section-heading{margin-bottom:16px}
:root[data-theme="c"] .section-kicker{color:#8b9bb0;font-size:11px;font-weight:800;letter-spacing:.14em}
:root[data-theme="c"] .section-heading h2{font-size:19px;color:#2a3d57;font-weight:700}
:root[data-theme="c"] .intent-grid{grid-template-columns:repeat(4,1fr);gap:14px}
:root[data-theme="c"] .intent-card{min-height:206px;padding:20px;border-radius:16px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.95);box-shadow:0 10px 26px rgba(50,75,110,.12);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);transition:transform .2s,box-shadow .2s}
:root[data-theme="c"] .intent-card::before{content:"";position:absolute;top:12px;left:14px;width:7px;height:7px;border-radius:50%;background:#ff5f57;box-shadow:11px 0 0 #febc2e,22px 0 0 #28c840;opacity:.85}
:root[data-theme="c"] .intent-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(50,75,110,.18)}
:root[data-theme="c"] .card-icon{width:38px;height:38px;border-radius:11px;font-size:20px;margin:14px 0 16px;box-shadow:0 3px 8px rgba(50,75,110,.1),inset 0 1px 0 rgba(255,255,255,.6)}
:root[data-theme="c"] .accent-blue .card-icon{background:linear-gradient(180deg,#dbeafe,#c7dffc);color:#2563eb}.accent-green .card-icon{background:linear-gradient(180deg,#d3f2e4,#bde9d6);color:#0d9663}.accent-violet .card-icon{background:linear-gradient(180deg,#e9e0fe,#d9cbfc);color:#7c5ce0}.accent-orange .card-icon{background:linear-gradient(180deg,#fde9d3,#fbdcbc);color:#c2701c}
:root[data-theme="c"] .card-title{font-size:13px;color:#7a8ba0;font-weight:600}
:root[data-theme="c"] .card-product{margin-top:4px;font-size:17px;font-weight:700;color:#1e3248}
:root[data-theme="c"] .card-desc{margin-top:8px;font-size:13px;color:#6b7c90;line-height:1.55}
:root[data-theme="c"] .card-cta{padding-top:14px;font-size:13px;font-weight:650;color:#2563eb}
:root[data-theme="c"] .tools-section{padding-top:36px}
:root[data-theme="c"] .tool-grid{gap:14px}
:root[data-theme="c"] .tool-card{min-height:224px;border-radius:16px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.95);box-shadow:0 10px 26px rgba(50,75,110,.12);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);grid-template-columns:150px 1fr;overflow:hidden;transition:transform .2s,box-shadow .2s}
:root[data-theme="c"] .tool-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(50,75,110,.18)}
:root[data-theme="c"] .tool-image{background:linear-gradient(160deg,#eef3fa,#e2ecf7);padding-top:16px}
:root[data-theme="c"] .tool-image img{width:116px;border-radius:12px 12px 0 0;box-shadow:0 6px 14px rgba(50,75,110,.16)}
:root[data-theme="c"] .tool-body{padding:24px 22px 18px}
:root[data-theme="c"] .tool-label{font-size:11px;font-weight:700;color:#7a8ba0;letter-spacing:.1em}
:root[data-theme="c"] .tool-body h3{margin:7px 0 7px;font-size:19px;color:#1e3248;font-weight:700}
:root[data-theme="c"] .tool-body p{font-size:13px;color:#647688}
:root[data-theme="c"] .flow{display:flex;justify-content:center;gap:30px;padding:16px 30px;border-radius:24px;background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.92);box-shadow:0 14px 34px rgba(50,75,110,.14);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);width:max-content;max-width:100%;margin:0 auto}
:root[data-theme="c"] .flow div{display:flex;flex-direction:column;align-items:center;gap:8px;color:#41556f;font-size:12.5px;font-weight:650}
:root[data-theme="c"] .flow b{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:linear-gradient(180deg,#ffffff,#e7eff9);border:1px solid rgba(255,255,255,.95);box-shadow:0 5px 12px rgba(50,75,110,.16),inset 0 1px 0 #fff;color:#2f6bd8;font-size:13px;font-weight:800;transition:transform .18s}
:root[data-theme="c"] .flow div:hover b{transform:translateY(-6px) scale(1.12)}
:root[data-theme="c"] .flow i{display:none}
:root[data-theme="c"] .bottom-grid{gap:14px;padding-top:20px}
:root[data-theme="c"] .secondary-card{padding:18px 20px;border-radius:14px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.95);box-shadow:0 8px 20px rgba(50,75,110,.1);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:transform .2s,box-shadow .2s}
:root[data-theme="c"] .secondary-card:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(50,75,110,.15)}
:root[data-theme="c"] .secondary-card span{color:#7a8ba0;font-size:11px;font-weight:700;letter-spacing:.1em}
:root[data-theme="c"] .secondary-card strong{font-size:15px;color:#24374d;font-weight:650}
:root[data-theme="c"] .secondary-card small{color:#718296;font-size:12px}
:root[data-theme="c"] .secondary-card>b{color:#2563eb;font-size:16px}
:root[data-theme="c"] footer{color:#7d8ea5;font-size:12px;padding-top:32px}
:root[data-theme="c"] footer a{color:#54749e;text-decoration:none}
@media(max-width:820px){:root[data-theme="c"] .shell{padding-top:66px}:root[data-theme="c"] .flow{gap:16px;padding:14px 18px}}
@media(max-width:520px){:root[data-theme="c"] .shell{padding-top:58px}:root[data-theme="c"] .shell::before{height:34px;font-size:12px}:root[data-theme="c"] .hero{padding:42px 20px 22px;border-radius:16px;margin-bottom:26px}:root[data-theme="c"] .hero::after{display:none}:root[data-theme="c"] .hero h1{font-size:28px}:root[data-theme="c"] .flow{width:100%;justify-content:space-between;gap:6px;padding:12px 14px;border-radius:16px}:root[data-theme="c"] .flow b{width:36px;height:36px;border-radius:10px;font-size:11px}:root[data-theme="c"] .flow div{font-size:11px}}

/* 当前 macOS 导航版：移除装饰性系统栏、序号和路径，突出可点击产品入口。 */
:root[data-theme="c"] .shell{padding-top:30px}
:root[data-theme="c"] .shell::before,
:root[data-theme="c"] .hero::after,
:root[data-theme="c"] .section-kicker,
:root[data-theme="c"] .flow-section{display:none}
:root[data-theme="c"] .tool-card{min-height:300px;grid-template-columns:184px 1fr}
:root[data-theme="c"] .tool-image{min-height:298px;align-items:center;padding:20px 14px;overflow:visible}
:root[data-theme="c"] .tool-image img{width:140px;height:auto;max-height:none;object-fit:contain;border-radius:14px;display:block}
:root[data-theme="c"] .contact-card{font:inherit;text-align:left;cursor:pointer;width:100%}

.contact-modal{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:20px;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
.contact-modal.is-open{opacity:1;visibility:visible}
.contact-backdrop{position:absolute;inset:0;background:rgba(31,49,73,.24);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
.contact-dialog{position:relative;width:min(360px,100%);padding:28px 28px 24px;border:1px solid rgba(255,255,255,.95);border-radius:20px;background:rgba(255,255,255,.94);box-shadow:0 22px 60px rgba(36,62,95,.28);text-align:center;color:#243b59}
.contact-close{position:absolute;top:10px;right:12px;width:30px;height:30px;border:0;border-radius:50%;background:#eef3fa;color:#6c819b;font-size:22px;line-height:1;cursor:pointer}
.contact-eyebrow{margin:0 0 5px;color:#6a85aa;font-size:12px;font-weight:750;letter-spacing:.1em}
.contact-dialog h2{margin:0;font-size:22px;color:#213c61}
.contact-copy{margin:9px 0 18px;color:#6f8299;font-size:14px}
.wechat-id{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;color:#2c4f78;font-weight:750}
.wechat-id img{width:22px;height:22px;object-fit:contain}
.wechat-qr{display:grid;place-items:center;width:190px;height:190px;margin:0 auto;border:1px solid #e1e9f3;border-radius:12px;background:#fff;overflow:hidden}
.wechat-qr img{display:block;width:100%;height:100%;object-fit:contain}
.contact-note{margin:14px 0 0;color:#92a1b2;font-size:12px}
@media(max-width:820px){:root[data-theme="c"] .tool-card{min-height:270px;grid-template-columns:148px 1fr}:root[data-theme="c"] .tool-image{min-height:268px}:root[data-theme="c"] .tool-image img{width:120px}}
@media(max-width:520px){:root[data-theme="c"] .shell{padding-top:20px}:root[data-theme="c"] .tool-card{grid-template-columns:120px 1fr;min-height:250px}:root[data-theme="c"] .tool-image{min-height:248px;padding:16px 8px}:root[data-theme="c"] .tool-image img{width:102px}.contact-dialog{padding:26px 20px 22px}}

@media(max-width:820px){:root[data-theme="a"] .shell,:root[data-theme="b"] .shell,:root[data-theme="c"] .shell{width:min(100% - 32px,640px);padding-top:32px}:root[data-theme="a"] .hero{padding-bottom:40px}:root[data-theme="a"] .intent-grid{grid-template-columns:repeat(2,1fr)}:root[data-theme="b"] .intent-grid{grid-template-columns:1fr}:root[data-theme="b"] .intent-card:nth-child(odd){border-right:0}:root[data-theme="c"] .intent-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){:root[data-theme="a"] .shell,:root[data-theme="b"] .shell,:root[data-theme="c"] .shell{width:calc(100% - 24px)}:root[data-theme="a"] .hero{padding-bottom:32px;grid-template-columns:1fr}:root[data-theme="a"] .primary-link{grid-column:1;grid-row:auto;align-self:start;margin-top:20px}:root[data-theme="a"] .intent-grid{grid-template-columns:1fr}:root[data-theme="a"] .tool-card{grid-template-columns:110px 1fr}:root[data-theme="a"] .tool-image img{width:90px}:root[data-theme="b"] .hero{padding-bottom:48px}:root[data-theme="b"] .hero h1{font-size:32px}:root[data-theme="b"] .tool-card{grid-template-columns:1fr}:root[data-theme="b"] .tool-card:first-child{border-right:0}:root[data-theme="b"] .tool-image{padding:20px 0 0 20px}:root[data-theme="b"] .bottom-grid{grid-template-columns:1fr}:root[data-theme="b"] .secondary-card:first-child{border-right:0}:root[data-theme="c"] .intent-grid{grid-template-columns:1fr}:root[data-theme="c"] .tool-card{grid-template-columns:110px 1fr}:root[data-theme="c"] .tool-image img{width:88px}}

/* Theme C 移动端最终覆盖：保持菜单栏与窗口安全间距 */
@media(max-width:820px){:root[data-theme="c"] .shell{padding-top:66px}:root[data-theme="c"] .hero{padding:44px 24px 24px}:root[data-theme="c"] .flow{gap:16px;padding:14px 18px}}
@media(max-width:520px){:root[data-theme="c"] .shell{padding-top:58px}:root[data-theme="c"] .shell::before{height:34px;font-size:12px}:root[data-theme="c"] .hero{padding:40px 18px 20px;border-radius:16px;margin-bottom:24px}:root[data-theme="c"] .hero::after{display:none}:root[data-theme="c"] .hero h1{font-size:27px}:root[data-theme="c"] .flow{width:100%;justify-content:space-between;gap:4px;padding:12px 12px;border-radius:16px}:root[data-theme="c"] .flow b{width:36px;height:36px;border-radius:10px;font-size:11px}:root[data-theme="c"] .flow div{font-size:11px}}

/* 最终层叠修正：移动端不保留已删除系统栏的空白，预览图完整可见。 */
:root[data-theme="c"] .tool-card{overflow:visible;min-height:320px}
:root[data-theme="c"] .tool-image{overflow:visible}
@media(max-width:820px){:root[data-theme="c"] .tool-card{min-height:270px}}
@media(max-width:520px){:root[data-theme="c"] .shell{padding-top:20px}:root[data-theme="c"] .hero{padding-top:30px}:root[data-theme="c"] .tool-card{min-height:250px}}

/* Final readability pass for the paired H5 cards. */
:root[data-theme="c"] .accent-blue .card-icon{font-size:26px}
:root[data-theme="c"] .tool-label{font-size:14px;line-height:1.35;letter-spacing:.06em}
:root[data-theme="c"] .tool-body h3{font-size:21px;line-height:1.3;margin:8px 0 10px}
:root[data-theme="c"] .tool-body p{font-size:15px;line-height:1.55}
@media(max-width:520px){
  :root[data-theme="c"] .tool-label{font-size:13px}
  :root[data-theme="c"] .tool-body h3{font-size:20px}
  :root[data-theme="c"] .tool-body p{font-size:14px}
}

/* Keep both H5 previews fully inside a stable tool-card frame. */
:root[data-theme="c"] .tool-card{height:260px;min-height:260px;overflow:hidden;grid-template-columns:150px 1fr}
:root[data-theme="c"] .tool-image{height:100%;min-height:0;padding:14px 12px;overflow:hidden;align-items:center}
:root[data-theme="c"] .tool-image img{width:auto;height:calc(100% - 8px);max-width:100%;max-height:100%;object-fit:contain}
@media(max-width:820px){:root[data-theme="c"] .tool-card{height:250px;min-height:250px;grid-template-columns:132px 1fr}:root[data-theme="c"] .tool-image{padding:12px 10px}}
@media(max-width:520px){:root[data-theme="c"] .tool-card{height:244px;min-height:244px;grid-template-columns:120px 1fr}:root[data-theme="c"] .tool-image{padding:10px 8px}}

/* Link labels must read as actionable controls, not passive captions. */
.intent-card .card-product,
.intent-card .card-cta,
.tool-card .tool-body h3,
.tool-card .card-cta,
.secondary-card strong{font-weight:800}

/* Keep every navigation affordance visually actionable across themes. */
.primary-link,
.intent-card .card-cta,
.tool-card .card-cta,
.secondary-card strong,
.secondary-card>b{font-weight:800!important}

/* 2026-10-12 unify secondary-card alignment: button variant defaults to center */
button.secondary-card{text-align:left;font:inherit}

/* 2026-10-12 mobile tidy-up (default theme, <=520px) */
@media (max-width:520px){
  .shell{padding:26px 0 24px}
  .hero{padding:0 0 22px}
  .brand-lockup{gap:12px}
  .brand-mark{width:46px;height:46px;border-radius:12px}
  .brand-mark img{width:40px;height:40px}
  .eyebrow{font-size:12px}
  .hero h1{font-size:25px}
  .hero-copy{margin:12px 0 16px;font-size:14px}
  .primary-link{padding:11px 14px;font-size:14px;gap:8px;border-radius:10px}
  .section-block{padding:20px 0 4px}
  .section-heading{margin-bottom:12px}
  .section-heading h2{font-size:17px}
  .section-kicker{font-size:11px}
  .intent-grid{grid-template-columns:1fr 1fr;gap:10px}
  .intent-card{min-height:0;padding:13px 12px 11px;border-radius:13px}
  .intent-card .card-icon{width:26px;height:26px;border-radius:7px;font-size:15px;margin-bottom:8px}
  .intent-card .card-title{font-size:11px;font-weight:600}
  .intent-card .card-product{margin-top:2px;font-size:15px;font-weight:800}
  .intent-card .card-desc{margin-top:6px;font-size:11.5px;line-height:1.5}
  .intent-card .card-cta{padding-top:8px;font-size:11.5px}
  .tool-grid{gap:10px}
  .tool-card{grid-template-columns:104px 1fr;min-height:0;border-radius:13px}
  .tool-image{padding-top:10px}
  .tool-image img{width:84px;max-height:150px;border-radius:10px 10px 0 0}
  .tool-body{padding:14px 12px}
  .tool-body h3{margin:5px 0 5px;font-size:16px}
  .tool-body p{font-size:12px;line-height:1.5}
  .tool-card .card-cta{padding-top:10px;font-size:12px}
  .tool-label{font-size:10.5px}
  .bottom-grid{gap:10px;padding-top:18px}
  .secondary-card{padding:14px 16px;border-radius:13px}
  footer{padding-top:24px;font-size:12px}
}